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第n个素数不好求,一般用黎曼猜想公式反算,可以获得比较高的精度作为参考范围.
m3 Q" z4 r- F9 m$ |) s 这里不进行第n个素数的计算比赛,只对一个趋势做出预测,求出第n个素数的极限系数k值.% I v+ F1 U9 t& B l
p(n)≈n×(lnn+lnlnn-k),这里n值和p(n)值都是已知的数据,只有k值未知,代人后
' t. W! y4 P0 Q9 i k=lnn+lnlnn-p(n)/n0 ^, r# y* H1 Z' u7 _, A
n值 p(n)参考范围 计算的k值" l+ |" y4 k( N- e
4 10 -0.787071379
3 Q. z& g3 r4 f1 ?$ B9 m6 }! W7 \- [/ s 10 29 0.236617538% Z* ?; o1 f$ y6 F) Q/ P. x
24 90 0.5843228377 P7 b. o/ z! w4 T& n
25 100 0.3879080015 |0 \( d: E0 ^1 j2 m8 ]
100 541 0.722349812
* r: o6 h: N' o 154 900 0.8095980155 Q) C# r5 f, P5 g% H6 Z) R+ U" n6 n
168 1000 0.805511381. y* X" `: i6 |* W; k/ L
500 3571 0.899510764: t5 `; T! _: k& |7 T9 N
1000 7919 0.921400013
2 e c7 [, H# o' B/ X; @ 1117 9000 0.909640998
0 y" a- N3 J4 ^0 v$ G$ }- } 1229 10000 0.939318112; Q6 b) Z: K0 _- {3 [
5000 48611 0.93708004
; v$ g! {1 s5 l5 ?" Z 8713 90000 0.948434316) x4 `! m/ t7 s. M t4 r. X
9592 100000 0.959124075
, J& u1 g( U8 T8 c 9592 100000 0.959124075
( G# _, B8 G F; v. L: \ 10000 104729 0.957767178# a# X1 _$ R& s/ y1 y1 c6 }' N, K0 J
30000 350377 0.962732035" O/ K$ |: h4 j# d
50000 611953 0.962094066* u& W, s1 ]! L
70000 882377 0.962864732- { A5 g2 M! w" z8 z3 D
71274 900000 0.960576676" L& B* p/ y. i* Q, \
78498 999983 0.954084756& h7 ~' Q" c7 f; j
90000 1159523 0.958252788
, t0 X1 u4 ^- U 100000 1299709 0.959305823
% Y l! A( }1 {& {. D 200000 2750159 0.957211231
% i! M+ a/ U+ E9 M 300000 4256233 0.95870651
" G- G, D, w2 s2 q* A; O1 f 400000 5800079 0.956189157. c; N8 w1 o! Q4 b V5 ~
500000 7368787 0.959107283 Y4 h; p3 v1 Z- F! ?& P8 n4 |, p% C
600000 8960453 0.958712825
0 T! V W1 {) h0 G! E4 ?1 O8 f k 602489 9000000 0.959219949) ~+ o( Q) I& ^* d9 q" s8 y6 D# c
664579 10000000 0.955559154
2 u' ~* L# Q, y' p0 D1 v" X) w# S 700000 10570841 0.957269999
2 c; _. n- V5 B2 N 800000 12195257 0.957804142
( z- i/ D! I; {5 J% W0 I 900000 13834103 0.957060924
7 a3 m0 h: \+ Q; {( P 1000000 15485863 0.955439472
1 F* F8 F ?5 ^: f( Q 4310144 73473859 0.956066856
7 q# {3 I" F' k! v, E: C' G: y; | 5216954 90000000 0.954714458
$ d9 E$ u$ U- ~2 V4 d# a0 f 5761455 100000000 0.955107932- J3 F. A9 ?3 \ X* l! _) r5 ^8 x' q4 [
10000000 179424673 0.9555709450 I0 x- C$ T F
28944316 551987369 0.9540162835 w! ?$ K+ ]* d# w9 I0 A
31255985 598608349 0.9541818832 L2 V2 U @; K; P9 ]2 f- X
46009215 900000000 0.953469255
7 z! ] I. f! m; N 50847534 1000000000 0.953771771
2 Y. o7 j' s. w, w2 A 62106578 1234567890 0.953423793
4 v2 W1 i# N; S4 z9 C 100000000 2038074743 0.9534073012 k l! B2 Z3 V% E1 |& S" T
111111111 2276855641 0.953517847$ Z$ f/ k+ T- P( U- [1 j- N
123456789 2543568463 0.9533454530 q# Y, r/ R' Z
399487944 8724310144 0.952931638 t# }" Z8 Y" W% P% f
411523195 9000000000 0.952872778$ ?% y4 `4 I2 o& F
449689285 9876543210 0.952957054
& f9 \% Q0 M, E; c! G( j* Z 455052511 10000000000 0.952960865
C: c# U) d. l" R1 e 498388617 11000000000 0.952836503
- L# [! P" v7 ^$ Z, k 541555851 12000000000 0.952792438
) G+ O" U. f: V: k% O/ g! U, U0 T 551987369 12242181113 0.952827232+ M7 O# W" s! B4 g) `
675522133 15125167433 0.95280727
7 g Z b2 p- O" | 1000000000 22801763489 0.952759371& q6 z2 k. N# N3 D( o! P
1111111111 25458070277 0.952691408( A2 Z" ]: X& Z1 P
1234567890 28423087477 0.9526597973 y8 P7 z/ Y- g' s- u, w$ b+ C
2031255985 47824232591 0.952633346: @! h, g5 L+ i, E* k5 ?7 c
3722428991 90000000000 0.952632842
) \ _4 P" M+ q: i3 E* f 4118054813 100000000000 0.9526619537 ^' I# x `1 y' G
4512105232 110000000000 0.9526096938 ]% A: P; A( x" X
4904759399 120000000000 0.952630576
v* Z/ E, k! ] 8724310144 218695452037 0.952688936) @/ q( a9 ^ f) h; d0 Y: y
9000000000 225898512559 0.952686974
- b3 y& O* B9 |, A, W) ^, d 9876543210 248857367251 0.952697866
& |3 S4 Y5 Z6 y 10000000000 252097800623 0.952688406
+ }% `" j7 o( N) p" H6 d 11111111111 281329920307 0.9527014688 f! g5 o5 M5 V. ]
12345678910 313945524931 0.952711638' S" M7 c4 v Y2 V% q' Y6 b. w8 b9 R
15125167433 387829275881 0.952732747
3 ]2 r; l( h) E# I! D6 Y7 K5 n 24188924259 632071564697 0.952803332
1 e' n3 C; R+ o$ L: ?0 l 33981987586 900000000000 0.952856627
7 n* T6 D$ R4 t 37607912018 1000000000000 0.952882443
! S0 B3 p7 d2 i7 _1 |4 Z 41220703418 1100000000000 0.952898557; Y4 M9 a) \+ x3 Q/ ]
44821651132 1200000000000 0.952913749 G' p# I" _% D h5 {8 p* p, S
48411812843 1300000000000 0.952928255
]1 j% B' A# u, `/ E0 z 51992079337 1400000000000 0.952943276
; ^+ h3 y7 r4 g" `+ h 55563209929 1500000000000 0.952959823
& p' C5 H, I, [& o( h 59125832286 1600000000000 0.952965859 U/ p8 n# i+ |9 F+ l* z! t
62680547806 1700000000000 0.952978131; q) H8 M% G0 k5 \8 t3 r
66227858344 1800000000000 0.952997051+ B# c! X Q8 L9 M! J) o
69768165361 1900000000000 0.953005511* X& g' w; G( b8 k! L) V! ]
73301896139 2000000000000 0.953018171% z ?) x" K. j: l
76829404177 2100000000000 0.9530348779 b" o5 f$ v- @7 c# @* i; r
80350940550 2200000000000 0.953031576! o9 {6 S2 t- m; U K3 D
83866890515 2300000000000 0.953043799
7 J0 W, ]: H1 y% N5 V: u 87377470252 2400000000000 0.95305485, M# K4 g& G6 K; ~- k$ M; i$ w9 s
90000000000 2474799787573 0.95305936" [' d1 G3 m, [9 j5 C; Z
90882915772 2500000000000 0.953063852
: o8 n* S1 x( z, I2 {: r 94383447111 2600000000000 0.95307122
; G* i+ y- r& P9 _: `% L7 I. k 97879280182 2700000000000 0.9530812138 {3 s6 _6 ]( h: R* h( {
98765432109 2725369633577 0.953083106" d/ }- ]6 ]. K
100000000000 2760727302517 0.9530907166 T6 o$ Q& L6 T/ ~% Q0 U
101370585277 2800000000000 0.953089006% O- a( ?( s( ]
104857545428 2900000000000 0.953097652
0 I8 Q3 E( p4 u% o1 Q5 F* C 108340298703 3000000000000 0.953101171, C7 v9 ?0 D+ F
111819048275 3100000000000 0.953113895
8 t+ ?: C" k! _0 K 115293888086 3200000000000 0.953123695
n H4 K3 t5 x) H% k4 g6 u 118764942011 3300000000000 0.953129267, O# K: `# k; G; ]8 n9 C
122232349643 3400000000000 0.9531350883 B2 Q& B+ R, G( {& F" ~3 p1 N
125696244675 3500000000000 0.95314551
$ a( \% r7 N9 Q 129156678096 3600000000000 0.95314744
W4 k, x& Q+ l7 U6 { 132613795649 3700000000000 0.953151137
6 S; l: o* {. D- Z 136067688083 3800000000000 0.953155352
2 w$ \4 d- A% _ 139518461664 3900000000000 0.9531632733 @* Q8 w: M' _4 n6 x6 @
142966208126 4000000000000 0.953175813
6 X$ T) ~: E3 D. m a 146410910264 4100000000000 0.953173082
, v; y( k3 F+ h4 y) U8 [ R 149852773964 4200000000000 0.953181021
/ b: {, B; v1 ]" _& `7 P2 j$ ~ 153291810623 4300000000000 0.953187137
z3 _+ Z9 y6 ^& x; y# y& {# E 156728136258 4400000000000 0.95320009
) e1 f' j9 Y. P: W, a- W 160161747327 4500000000000 0.953206672* T7 m! [' H3 y' w
163592692077 4600000000000 0.953204523
7 B! D; G _9 T- A 167021151370 4700000000000 0.953215136
4 J V1 [! v, t; _ k 170447066694 4800000000000 0.9532177888 J! Y9 G* U* ]/ I7 {" u; T
173870573446 4900000000000 0.953226341
, x2 r; n8 Q, X3 c/ g5 f: W$ I& E8 u 177291661649 5000000000000 0.9532300351 K, F0 Q# ?) C, {! R0 K. K8 v
180710431905 5100000000000 0.953237157
6 w) z* l# }. L9 w. z. z1 P 184126901158 5200000000000 0.9532424287 s; v" \2 C9 P' v+ k- _( T$ A
187541119457 5300000000000 0.953246415, n6 S9 h+ |. q! k
190953126302 5400000000000 0.953248309
' _1 {- `8 v6 z1 a$ E' Y 194362990637 5500000000000 0.953252061
3 D- L! Q1 u. g" w: x- t7 f1 Y& ^2 w 197770743547 5600000000000 0.9532559837 p9 w1 |7 J' ~4 o
201176428961 5700000000000 0.953260598
+ N- a8 H) l$ h( W5 W- Z7 | 204580066580 5800000000000 0.953263125" \, K$ R* d8 ~5 X
207981734215 5900000000000 0.95326937
5 n( \8 C9 ]+ Y3 s% ^( E 211381427039 6000000000000 0.953273461 V! ~( i0 B3 u: J8 `8 A8 f; c
214779167476 6100000000000 0.953273786
3 B/ `/ o2 i; K- x1 R& |9 S 218175058254 6200000000000 0.9532798379 P; F+ v% y8 I# U
221569102517 6300000000000 0.953287444. ~3 B" c( ^( Q& ]
224961273873 6400000000000 0.953288951( A9 i$ [4 e9 O; @. w
228351698532 6500000000000 0.953296988
+ Z; O S7 {7 e5 L* i+ I: x/ t: W 231740339225 6600000000000 0.953302771
- W% N/ [( ~: O! l 235127223891 6700000000000 0.953306312
7 \0 r& [8 b, A+ D. A2 c3 l 238512407609 6800000000000 0.953311095 L+ y# Y _6 @1 r- F
241895851648 6900000000000 0.9533090538 J4 M" a+ H: C: R; @0 `& M
245277688804 7000000000000 0.953313329
7 D0 _: }- U. J# F4 T5 L6 P- Q 248657916582 7100000000000 0.953320369; f& \3 [! e% d7 Z
252036515078 7200000000000 0.953324842
7 G* j* ^9 Z; T8 O 255413505374 7300000000000 0.953326527
+ W+ ^' _0 [! M 258788925595 7400000000000 0.953327242
* u% T9 U, `6 Z) Z4 J* K& K 259656817434 7425719040829 0.953329238
" Q' h8 l3 @/ ]# B4 a2 d 262162841215 7500000000000 0.953331879
4 _: L( |# `0 d4 C& Q 265535241952 7600000000000 0.9533367
& I* ?7 b) L4 d& B# J 268906152117 7700000000000 0.95334203
1 K8 }& s% ]! B" |4 e 272275559525 7800000000000 0.953344261
5 o7 m1 g1 U/ K 275643544693 7900000000000 0.9533500042 s4 i) P/ M* z
279010070811 8000000000000 0.953353124
* H7 c9 m- w: e6 T: J 282375171661 8100000000000 0.953355251
! C. H2 `3 L. l$ i5 W0 B1 p. ^# x 285738881494 8200000000000 0.953358042
- C f* M1 J: m, ^5 j 289101209285 8300000000000 0.953360526
Y L: j- T3 M- r: O: l, e 292462199848 8400000000000 0.9533654717 @* Y, J6 e. |% k1 n r
295821814466 8500000000000 0.953367157
: x9 S" R( s, V4 S2 o4 x 299180106058 8600000000000 0.953369279
& F: N7 W3 A6 G: K% A3 G3 W 302537108851 8700000000000 0.953373572! r, V6 [- x7 m6 j9 l; w8 w% h
305892791866 8800000000000 0.95337538
" l, i1 Z( j6 w2 y. [5 u 309247216816 8900000000000 0.95337922
3 o/ t. n9 L2 }& B# @1 k 312600354108 9000000000000 0.953380742 l* _+ ]1 U# q- F( B3 O j }" U
315952260435 9100000000000 0.953383952
3 n/ ^) F3 L1 P+ |% F+ f! n 319302948414 9200000000000 0.953388614
1 |. ]( a$ y2 O `& H' a9 g2 x 322652410741 9300000000000 0.9533926822 v+ f) n1 F8 |8 d% s9 C8 {+ B
326000647688 9400000000000 0.953394916
Z; ^4 U' U( V9 O- K$ z$ [ 329347709593 9500000000000 0.9533986976 G3 g& C1 s5 I ~2 a, U3 q$ f1 T
332693561966 9600000000000 0.9533996766 g8 j7 b g$ u6 X8 m
336038264769 9700000000000 0.9534021053 v/ \4 w6 Z. S, r. g$ n
339381817251 9800000000000 0.953404747" Y; ]6 X$ v( G. k
342724224549 9900000000000 0.953406947! {/ E' ?: m; D' n* U0 K! C# |
346065536839 10000000000000 0.953411996+ V- l* w5 ?" o9 S& Y6 r9 f# h; \2 T
379418886337 11000000000000 0.953438621
1 s) w9 ]4 M4 R5 S8 o( M" c9 F 511905471132 15000000000000 0.953527263
; z% l+ e8 x+ _' u( b 643217611048 19000000000000 0.953596753
: e# _+ b- }) |5 l x 675895909271 20000000000000 0.953610735
% K, ^6 Z/ g" ] 773621469799 23000000000000 0.953652834
( a% T1 C- `5 B0 q 886674661126 26486412297029 0.953696348
' m, ? e8 v" U4 |2 b 887114276903 26500000000000 0.953696396& ]6 L$ d% _% A/ \# ]+ `, h+ L( _
900000000000 26898370231697 0.9537012470 _% p0 ]- O# j3 w: I( a
932911185326 27916701633581 0.953711916; p' u3 ^; O" N+ ^* u! u- Y
967879555617 29000000000000 0.953724541
/ i7 W7 t, i& e# H: m% p 1000000000000 29996224275833 0.953735935
+ m& [7 V* y& `2 r9 B5 L6 c( u 1000121668853 30000000000000 0.953735897
+ k9 k2 t S7 q# c6 G" G3 W% o# v$ q* c0 v 3204941750802 100000000000000 0.954126498% ^- q, W: G& y9 ~- S% S1 L: Y/ S% Y* b: g
10000000000000 323780508946331 0.954537117
0 F% U# W0 o( c 29844570422669 1000000000000000 0.954950335/ r, e* |! P1 L1 X% M5 |+ Q
100000000000000 3475385758524527 0.955423492/ p. P8 v, W! H: D q
279238341033925 10000000000000000 0.955833997
$ [' ]3 C0 t* f, o: z# ]' u, X8 [0 t 547863431950008 20000000000000000 0.956106462
: N+ M! e- w! H4 b 1000000000000000 37124508045065437 0.956350996" x0 J9 V% W/ R
1075292778753150 40000000000000000 0.956380551 J x$ W9 H+ b: C
2623557157654233 100000000000000000 0.956744527
" y, b( [, ^* m! v9 m: G 3893882469583623 150000000000000000 0.956905884
4 C) d2 f$ _" L5 `- m6 o/ c 10000000000000000 394906913903735329 0.957291265- B' h2 R9 B7 K6 [
24739954287740860 1000000000000000000 0.9576605541 t. S- [! s0 Q
48645161281738535 2000000000000000000 0.95793517/ B: ]% p7 L. ~
72254704797687083 3000000000000000000 0.95809533
6 ^' Z2 i2 _* F% `" [6 P9 v 95676260903887607 4000000000000000000 0.958208716: o% ^/ ~! x* v' W8 F* g f
100000000000000000 4185296581467695669 0.958226556
- ~& V: n' |9 f& F9 @3 P 118959989688273472 5000000000000000000 0.958296529
1 B! {1 N8 Z/ @/ w/ \ 142135049412622144 6000000000000000000 0.958368158
9 O3 w( e' l: e8 ? 165220513980969424 7000000000000000000 0.958428646
* F, Z8 M" H- K) Q7 B, [- q 188229829247429504 8000000000000000000 0.958480986
1 r ~/ x2 Z0 j" [( ]* e: Q 211172979243258278 9000000000000000000 0.9585271% W3 a& b, ]2 H2 L6 u. I
234057667276344607 10000000000000000000 0.958568315
) z: `1 m6 n5 U: I" _, x* ? 460637655126005490 20000000000000000000 0.958838542
# R8 J7 V* e9 N2 S5 m' ~% y9 D 684559920583084690 30000000000000000000 0.958995813
0 G8 c- E3 j! i3 l9 u 706849401776940275 31000000000000000000 0.959008504* Y# c& ^: ~( |; ^+ F- g
906790515105576571 40000000000000000000 0.959107022
2 i; @ ~; E+ t+ O4 P 1000000000000000000 44211790234832169331 0.959145642
6 y- y- q) R% Z5 } 1127779923790184543 50000000000000000000 0.959193055
% { a# j, }* X: A1 {& q" l 2220819602560918840 100000000000000000000 0.959458995
! {- s7 {7 {$ i 3516585752930430595 160000000000000000000 0.959638155" ~+ r; A( @. V3 l
3731397829842461168 170000000000000000000 0.9596611943 ?. d, p* _" \5 m9 T9 s0 Y: _
3945938652811699917 180000000000000000000 0.9596829 Q& \0 x. k7 ]$ }- b4 C2 C. I
4374267703076959271 200000000000000000000 0.959722871 G6 H3 Z: _5 w' l
4588082544160859769 210000000000000000000 0.959741366
+ c! g9 l. f1 L8 h) Y# z1 @ 5654086442526321042 260000000000000000000 0.9598221917 ^- h! u, o$ }0 ~, B! E* X' F$ j
5866733862193360875 270000000000000000000 0.959836454# U7 m4 k) m. K: B$ \# O1 m
6503696293016202398 300000000000000000000 0.95987623
( n: ^. g9 [) e [6 h9 D 6715709842660010419 310000000000000000000 0.9598886" n7 [+ @& q, _2 U4 p* b5 q% O
6927578466326617308 320000000000000000000 0.959900571# W" g" s+ h+ T' f% s
8617821096373621600 400000000000000000000 0.959984581
' V9 t4 B3 @: W! i/ Y3 G' Q3 S 10000000000000000000 465675465116607065549 0.960041680 S6 X6 d1 ~. x
10720710117789005897 500000000000000000000 0.960068355' J, Z2 y2 l# _ a& _
12814731195053369962 600000000000000000000 0.960136628
' E: I: r4 R* N; z9 ~ 21127269486018731928 1000000000000000000000 0.960327059
+ W j! X1 I; F, z7 E 41644391885053857293 2000000000000000000000 0.960583407% W8 A5 n( q, g0 X9 F' Z
82103246362658124007 4000000000000000000000 0.96083734
m2 E, C$ e$ G" V 100000000000000000000 4892055594575155744537 0.960910633
: \8 y& y! w. {1 t 201467286689315906290 10000000000000000000000 0.9611692325 n% [6 L0 ? x' D: Q; N$ r
299751248358699805270 15000000000000000000000 0.961314699
6 |1 T$ T2 [7 ]; P1 U, a: t 397382840070993192736 20000000000000000000000 0.961417385; t8 m6 w r. l' E# Z( U' S
783964159847056303858 40000000000000000000000 0.9616629962 c. l( y `* H
1925320391606803968923 100000000000000000000000 0.96198374
5 p2 n! X+ j1 @; w+ O$ u8 Y 18435599767349200867866 1000000000000000000000000 0.962769828# N& v6 n" [, e' ?1 @. J$ G7 @
176846309399143769411680 10000000000000000000000000 0.963527422810099736172148663356506 u) x: J* J- V! F% ~; O. z
1699246750872437141327603 100000000000000000000000000 0.964256911769038367410632552188609 Y' E) l) l4 ^. V- E
从0.2一直上升,虽然区间有所反复,但总体趋势明显,就是趋向于1,即k值为1/ Y5 y# O+ r8 g9 Z* m8 _, `
所以无穷大时p(n)≈n×(lnn+lnlnn-1)成立. C1 i# n* o8 m7 R5 s3 w
如果一直大下去,比1大,比2大,直至大到lnlnn,这时后两项一减为0,变成了p(n)≈n×lnn这可能吗?1 Z" g( r6 }" e8 o. N3 {
我坚持无穷大时p(n)≈n×(lnn+lnlnn-1)0 f+ R% g, w" C+ a7 y) U, A( M
zan