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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.. Y3 B' z# P0 k% A4 d8 b
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.
+ S0 M' k( U9 _5 V# I, pp(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
! n, K- @- ]3 q% ? o/ qk=lnn+lnlnn-p(n)/n- Y% ^+ [. ^9 I, j
n值 p(n)参考范围 计算的k值
$ D' P" _' L% v) v9 m+ v2 H4 10 -0.787071379
1 A4 ~3 A* P% k+ F# U/ `10 29 0.236617538+ d9 [: q0 t2 j
24 90 0.5843228372 u5 P9 q; C+ K" D. R6 t
25 100 0.387908001
& R: F" E# w/ i100 541 0.722349812
. E. s0 E0 M8 Y$ H154 900 0.809598015
4 |( `+ K* z. q& B- O3 B- K168 1000 0.805511381
+ U& ~* k5 E! s9 u500 3571 0.899510764# O( }6 ~, }3 j
1000 7919 0.921400013
- W: J& P3 p8 c4 m- `$ J1117 9000 0.909640998% q- j. D! h# K9 Z
1229 10000 0.939318112
1 v) N+ S, c" ~; s7 v, z, \5000 48611 0.937080042 Y$ O9 j O) u5 _
8713 90000 0.9484343165 x1 M# _: Z& v, u% h; z
9592 100000 0.959124075
, h) M( ]% r/ `8 G, [7 I9592 100000 0.959124075
6 ? k7 ^; c, A6 y10000 104729 0.957767178( O( D8 R: }( v/ `2 C* G" C3 \* v
30000 350377 0.962732035
" D- g# H! f1 V50000 611953 0.962094066: u! K6 L, Q1 ?5 m
70000 882377 0.962864732
( k3 J' E" j0 {) e( H71274 900000 0.960576676
+ ?$ M4 ]; U/ |% H( j2 b, }7 j/ ]3 G1 m78498 999983 0.954084756 T4 y2 ?9 b& q
90000 1159523 0.958252788
7 ^+ a, A( s$ O, }& P8 |100000 1299709 0.959305823
& |! U; q" Q( s/ ]/ [4 i200000 2750159 0.957211231
% w8 E( t; h+ ^8 C& R300000 4256233 0.95870651
) u6 h$ N; D3 q400000 5800079 0.956189157
9 k' c. [, x0 A" E500000 7368787 0.95910728# F; b- T$ o N) I: Y" w% C) R
600000 8960453 0.958712825
! ]8 P# m+ ?2 D7 f6 @602489 9000000 0.959219949
- {$ V6 m/ p& @. h664579 10000000 0.9555591542 }$ ]6 a1 X3 K$ U, S% f- u9 x
700000 10570841 0.957269999
: @2 `6 }8 X* R" [+ F3 w0 T2 n; l800000 12195257 0.957804142/ ]) K8 k" R: B& ]9 N& V( v! A% I* Y1 U
900000 13834103 0.9570609247 O& g' P2 X: V! o1 F+ i
1000000 15485863 0.955439472
; P0 b4 T- m Q! n. Q; s" B4310144 73473859 0.956066856: T* R7 J% }& a
5216954 90000000 0.954714458
h, g* y W1 t+ ^5761455 100000000 0.955107932" j! n3 @; o/ l; C. k* Y
10000000 179424673 0.955570945
' b! Q3 O, E6 K$ N28944316 551987369 0.954016283
- ] M( s+ I! w# s3 B5 ~5 D31255985 598608349 0.954181883
8 e& h9 t) x, d' N3 ^$ A46009215 900000000 0.953469255
- b% N4 M& G* i: v3 t, h: E50847534 1000000000 0.9537717719 T0 B$ C2 V2 j+ s- U$ B
62106578 1234567890 0.953423793
8 o2 e0 O+ s2 |, B' P: W( G100000000 2038074743 0.953407301
! D; F" X8 t: s111111111 2276855641 0.953517847
! Q4 q) i: y& @! q( u7 b5 B123456789 2543568463 0.953345453( `% F& N- A9 v5 h$ k$ R0 A @" ]* E
399487944 8724310144 0.95293163
. z% }- g0 p( [; Q$ o* |411523195 9000000000 0.952872778
$ T0 U4 I4 s2 B3 i3 _9 E" C449689285 9876543210 0.952957054
, d) p# x% E5 [455052511 10000000000 0.952960865
) C _ c! {# @9 z498388617 11000000000 0.952836503& u% z( E8 x- B/ t8 D6 B ^" v
541555851 12000000000 0.952792438
- f7 K. Q' i# ~551987369 12242181113 0.952827232- E/ V% r3 g5 t
675522133 15125167433 0.95280727
/ K* B; S+ m( L; t3 B/ b0 g/ I1000000000 22801763489 0.952759371
1 \" P! B( V5 p5 p1111111111 25458070277 0.952691408
% k, V+ y& A+ v/ ^' ~1234567890 28423087477 0.952659797, |* ~3 z3 O" a. R4 s2 a' V' l
2031255985 47824232591 0.9526333468 l, h6 i/ z9 V+ ?( |
3722428991 90000000000 0.952632842
6 p6 z+ h) q- H- X8 N$ }4118054813 100000000000 0.952661953
; c6 f3 \3 L* G: m9 }! w4512105232 110000000000 0.952609693
9 H4 v7 V% K- L! `! d4904759399 120000000000 0.952630576
' t1 H$ \- ] |8724310144 218695452037 0.952688936/ v8 ]7 F4 V, n; u9 D: I; I. H
9000000000 225898512559 0.952686974; N0 E; |# M! u. I' Y
9876543210 248857367251 0.9526978667 o+ K6 ~5 p: ~1 \ S9 h
10000000000 252097800623 0.952688406
( K, C1 ]# y+ U; T5 I( e$ K5 G11111111111 281329920307 0.952701468
/ Q. i8 i( {0 @. O" l) A12345678910 313945524931 0.952711638' k N X3 E6 ?+ E5 y% m
15125167433 387829275881 0.952732747$ d- Z& B" C* d t4 V4 `
24188924259 632071564697 0.952803332
4 |% o- V8 e* a% [- @& v1 L33981987586 900000000000 0.952856627
; b: E5 e5 X) w( c. a+ O& }37607912018 1000000000000 0.952882443
* G9 B/ q; n) M41220703418 1100000000000 0.952898557
" H1 k6 i1 s' s2 g+ O' D) b6 S44821651132 1200000000000 0.952913749! T4 H# P5 Q; a- O
48411812843 1300000000000 0.952928255
% Y# s6 U+ W! [2 E* u) |/ E$ }51992079337 1400000000000 0.952943276
8 c* Q' C5 {4 r9 s0 h55563209929 1500000000000 0.9529598236 N5 w, d* ^9 w
59125832286 1600000000000 0.95296585
! S5 _& x( y( k E- f9 }) I6 b5 B62680547806 1700000000000 0.952978131
3 t# y0 x8 z( r# `66227858344 1800000000000 0.952997051& }4 T, ~: n. d
69768165361 1900000000000 0.9530055116 n+ I# l7 I& U
73301896139 2000000000000 0.953018171
9 R" G$ i3 B( R/ Y76829404177 2100000000000 0.953034877$ k1 q. c/ J) q, q
80350940550 2200000000000 0.953031576+ ] U8 j8 [/ S2 A& W) [# `. h
83866890515 2300000000000 0.953043799
: u' ?5 S: z( ^* [87377470252 2400000000000 0.95305485$ c( h7 Y4 u0 C0 P
90000000000 2474799787573 0.95305936
5 q. C v) `, j1 @/ D b90882915772 2500000000000 0.953063852
5 U9 h- t' N8 p; T2 f94383447111 2600000000000 0.953071221 {0 E, Y) }7 B- ? ~! P- Q5 {
97879280182 2700000000000 0.9530812134 b$ `7 q- X% o7 f' Y
98765432109 2725369633577 0.9530831060 q1 }! B+ B, _, @ @8 A8 b
100000000000 2760727302517 0.9530907165 T$ m4 D3 V k+ s0 T7 F' F
101370585277 2800000000000 0.953089006
0 h+ h: ]! ~" g/ [104857545428 2900000000000 0.953097652" H1 {" [- A6 p& |/ @" \. U8 k
108340298703 3000000000000 0.953101171, F" V$ ]( \/ [* _
111819048275 3100000000000 0.953113895& X7 Z5 b* M$ G* B. p/ j
115293888086 3200000000000 0.953123695
9 ~' Z) _9 G. _) c: ?8 y. b118764942011 3300000000000 0.953129267
( W, o. p- a$ m! k, R122232349643 3400000000000 0.953135088
% y N& ?; w$ _# ^3 s' [. N+ x125696244675 3500000000000 0.95314551( S P; s/ J$ R4 X' a' v' p
129156678096 3600000000000 0.95314744
# T3 X4 _' ?: f. m( e& K132613795649 3700000000000 0.953151137
) G/ Q5 {' k) w) T% G7 f/ y136067688083 3800000000000 0.953155352) h9 N( d# [( d1 X6 k- V
139518461664 3900000000000 0.9531632735 f) g5 e& K. ?6 e) u. |' R
142966208126 4000000000000 0.953175813
6 c, A3 ]' v/ G' Q+ L8 L146410910264 4100000000000 0.953173082
, G; s" b( q" \8 v, u. g" M149852773964 4200000000000 0.953181021 j, E& O: J) @
153291810623 4300000000000 0.953187137
5 P% y* Z* Y1 \3 ?5 j& D9 q156728136258 4400000000000 0.953200095 j1 u0 y1 P# j& n! T& [2 {
160161747327 4500000000000 0.953206672! x, j9 I9 V" D/ U
163592692077 4600000000000 0.953204523
5 g- _! S/ b: M6 ]9 R167021151370 4700000000000 0.953215136) T: y! ~- o: r6 w/ o% p/ ?
170447066694 4800000000000 0.953217788- B* n' k+ W1 z* Z8 `8 k
173870573446 4900000000000 0.953226341
0 X* ]9 f" G& A D3 l3 Z7 C! W$ u3 ~- B177291661649 5000000000000 0.953230035
- f2 u8 Z9 F: v; a$ }180710431905 5100000000000 0.953237157, ~2 z! j& Q* h4 f% i, K
184126901158 5200000000000 0.9532424287 [( S. }# N1 n, D0 ]: g
187541119457 5300000000000 0.953246415
! w1 N+ B- S/ z a- F8 ^) K190953126302 5400000000000 0.953248309
5 S5 e6 D0 ~' Z# R194362990637 5500000000000 0.953252061
- F. _$ ]( F7 T V+ ^197770743547 5600000000000 0.953255983
: D2 G5 K$ K, C1 `) L1 m" ~+ w201176428961 5700000000000 0.9532605981 p& C# `) i3 O+ n# ^# t" ~1 i
204580066580 5800000000000 0.953263125
9 K& D% R4 I0 P+ q207981734215 5900000000000 0.95326937 {; T t% q. u' f) R
211381427039 6000000000000 0.95327346+ H4 H w |, S6 e0 \
214779167476 6100000000000 0.953273786
) K0 O7 T3 o \' f$ s5 W" S218175058254 6200000000000 0.9532798379 U8 f: K) ?9 u1 M
221569102517 6300000000000 0.953287444" v! g3 `1 e) v% K
224961273873 6400000000000 0.953288951
; X9 p0 x; d" Q! H/ R: G228351698532 6500000000000 0.953296988
5 ~( u W/ N) l231740339225 6600000000000 0.953302771+ p) Q- V, R/ r7 t
235127223891 6700000000000 0.9533063124 v7 i w" R |$ q: V" D% \2 I
238512407609 6800000000000 0.953311095" [9 w1 p( k: u- R$ r, j5 [) l
241895851648 6900000000000 0.9533090536 B+ O8 ]6 L( K6 j
245277688804 7000000000000 0.953313329% a4 b3 _% l6 G& z5 s4 o0 s
248657916582 7100000000000 0.953320369
5 I* t9 @% T! G8 W& j! m0 ^252036515078 7200000000000 0.953324842
+ u8 M" N$ M7 f! s% z255413505374 7300000000000 0.953326527
" u: @% P- u2 r; x9 K7 ~0 [2 E258788925595 7400000000000 0.953327242
1 ?( C5 m. X) g }& J! B259656817434 7425719040829 0.953329238
) s; N! |* L5 @# |2 t' M262162841215 7500000000000 0.953331879$ X* B8 }' Y; E- B& x
265535241952 7600000000000 0.9533367
" O9 |, T t3 d268906152117 7700000000000 0.95334203: g2 s: M7 U; x
272275559525 7800000000000 0.953344261
6 [& ]3 ?( K# d- P275643544693 7900000000000 0.953350004
5 Z8 K; f& r* B: L9 f279010070811 8000000000000 0.953353124
/ U$ w: p, X9 b282375171661 8100000000000 0.953355251* Y, }% H3 E) \+ \
285738881494 8200000000000 0.953358042
2 [" k5 R3 k, `( e: K289101209285 8300000000000 0.953360526( h0 m* r4 ]. P( S
292462199848 8400000000000 0.953365471- N5 n* c( K; Z7 v& V& j
295821814466 8500000000000 0.9533671574 c! r: Z' E6 A; Z! W" t( |
299180106058 8600000000000 0.953369279
% ^" j Z: z& E+ M7 u3 d302537108851 8700000000000 0.953373572
, U! D5 W2 b R305892791866 8800000000000 0.95337538
, q% w" f; V# B309247216816 8900000000000 0.95337922; o9 k Q1 }" V5 g, N& a
312600354108 9000000000000 0.95338074
0 N5 V4 ~ e6 [315952260435 9100000000000 0.953383952
( e/ P, w" p# g F+ o* p% A: J( E/ l319302948414 9200000000000 0.953388614
- e: P5 ]; [ d: f2 O322652410741 9300000000000 0.953392682% q. N" D/ E, F
326000647688 9400000000000 0.953394916
$ p. u: J, a8 E( X1 P6 a- [) A3 R329347709593 9500000000000 0.953398697$ U* z! V# {% Y# G* q8 K9 ]' `& O
332693561966 9600000000000 0.953399676* C. o2 ~! E8 o; v P
336038264769 9700000000000 0.953402105
- L4 M# k) O9 Z# ~. Z339381817251 9800000000000 0.953404747
; Q4 m* c$ z! v342724224549 9900000000000 0.953406947
# I- e' _7 r: x3 K9 [: U6 u346065536839 10000000000000 0.9534119963 c b3 ]* H* J# d
379418886337 11000000000000 0.953438621/ E; _2 n4 G) m& N- _0 q+ p
511905471132 15000000000000 0.953527263
! u9 U9 n& l/ c( Q, b. b; f: e5 Q! C643217611048 19000000000000 0.953596753
- I8 F% y* R3 x5 k675895909271 20000000000000 0.953610735
2 W, r& k: S% E% W$ [773621469799 23000000000000 0.953652834
# c6 F. i$ y; }7 e9 R, I2 r0 D886674661126 26486412297029 0.953696348( f6 b/ j e) j7 r+ P
887114276903 26500000000000 0.953696396
% F) w, y. k9 m- w2 v$ W0 w9 M900000000000 26898370231697 0.9537012475 _- e/ e8 N; M2 y( U
932911185326 27916701633581 0.9537119161 K: h n1 b* k( w- y0 z* x; t3 x, k
967879555617 29000000000000 0.9537245416 L, S% U* @) N# S; `
1000000000000 29996224275833 0.953735935 J9 J) Q3 n8 P; e( @& T3 h
1000121668853 30000000000000 0.953735897& a/ T& Q4 {1 b9 S( \% x# C4 [" t2 p4 T
3204941750802 100000000000000 0.954126498
7 l" d/ C2 ^# T4 H0 b10000000000000 323780508946331 0.9545371176 l" Q0 M l5 r- s3 m# d2 R9 Y0 `7 ^
29844570422669 1000000000000000 0.954950335
; ]% W& D4 l. A: Y. {100000000000000 3475385758524527 0.955423492
5 s" j4 u$ Q4 L& I: b4 z4 D* t279238341033925 10000000000000000 0.955833997
6 J- x- c' j2 j547863431950008 20000000000000000 0.956106462
1 }4 ~( ]; T8 |. j* K1000000000000000 37124508045065437 0.956350996" M: x3 P \* Y4 Z' E& l% H
1075292778753150 40000000000000000 0.95638055
+ ^9 \( Z' ^/ d2623557157654233 100000000000000000 0.956744527
: d: k- L# q1 ]3893882469583623 150000000000000000 0.956905884* g' K! E, S( A& ~ X
10000000000000000 394906913903735329 0.957291265
" @" s0 R* }% }4 K3 Q24739954287740860 1000000000000000000 0.957660554
$ B. q; G2 G6 h/ g3 {4 G48645161281738535 2000000000000000000 0.957935176 `4 [9 Y+ B2 D. }
72254704797687083 3000000000000000000 0.95809533
8 p1 r0 X6 B: N0 i3 m* _95676260903887607 4000000000000000000 0.958208716+ V/ `. @8 f' o+ E2 t
100000000000000000 4185296581467695669 0.958226556
$ I3 ?0 |- `/ z& C/ L118959989688273472 5000000000000000000 0.958296529. u: Y E* L# Q: N4 l: u
142135049412622144 6000000000000000000 0.958368158" h; j) Q7 Q6 M3 t9 G0 l
165220513980969424 7000000000000000000 0.9584286460 B: D6 \2 g! E7 {
188229829247429504 8000000000000000000 0.958480986
# I9 z' d4 ?" s' h& k9 r3 r211172979243258278 9000000000000000000 0.95852712 @! P8 k* {# y+ E, N# U, j, F
234057667276344607 10000000000000000000 0.958568315+ i5 F4 Q" B5 L0 y- ?% J
460637655126005490 20000000000000000000 0.958838542
1 ?" h3 L% l, [# a4 C684559920583084690 30000000000000000000 0.958995813
" U8 j6 N# A$ Q706849401776940275 31000000000000000000 0.959008504
+ m3 E8 D1 h6 T2 h6 ?906790515105576571 40000000000000000000 0.9591070220 h: I7 f+ t% n( r
1000000000000000000 44211790234832169331 0.959145642
4 Y1 Y. q& a* V5 q8 ~+ C1127779923790184543 50000000000000000000 0.959193055
" P: B# d3 \3 t9 g% \2220819602560918840 100000000000000000000 0.959458995
8 S5 p' K: |- r. H3 x4 Y* v3516585752930430595 160000000000000000000 0.959638155& B5 t) ]) a* L3 ?8 W. K0 E) }$ n
3731397829842461168 170000000000000000000 0.959661194
0 [& ^) D; z7 P" ~3945938652811699917 180000000000000000000 0.9596829 d9 i; V% I* K4 [% N* ?* z6 O1 w
4374267703076959271 200000000000000000000 0.959722871
% p9 `( T6 H/ l2 [ z9 j9 h0 t# A+ ]4588082544160859769 210000000000000000000 0.9597413664 _2 b! ^! V5 c7 \( k- F
5654086442526321042 260000000000000000000 0.9598221918 ~8 V8 ^' X( C3 D/ u! i
5866733862193360875 270000000000000000000 0.959836454
. g8 f% l. z" w5 B% @+ u6503696293016202398 300000000000000000000 0.95987623% d1 V( d4 [% ~1 z% d( H
6715709842660010419 310000000000000000000 0.95988869 T1 ~. d \* _) Q
6927578466326617308 320000000000000000000 0.959900571, a: ~6 V [: h" }9 t' k/ A
8617821096373621600 400000000000000000000 0.959984581
! j4 A3 |+ D" |# m8 l) S4 l) h10000000000000000000 465675465116607065549 0.96004168
8 N, x( x! f4 S6 M2 G10720710117789005897 500000000000000000000 0.960068355& n0 c$ f3 d3 u2 T4 I% R g3 ^
12814731195053369962 600000000000000000000 0.9601366285 n: n$ b/ R* `, _" [* L
21127269486018731928 1000000000000000000000 0.960327059* s: a# d* Y% ?6 B, ?
41644391885053857293 2000000000000000000000 0.9605834072 ^! o" y& }: b0 N6 G' z/ T
82103246362658124007 4000000000000000000000 0.96083734
. j5 E: w% D$ e1 I100000000000000000000 4892055594575155744537 0.960910633
0 R8 a* `: Q$ j201467286689315906290 10000000000000000000000 0.961169232
$ |; F8 h R0 q! Q299751248358699805270 15000000000000000000000 0.961314699) I7 C; P! t$ M- r* S
397382840070993192736 20000000000000000000000 0.961417385
- N% t; n) l8 _5 c783964159847056303858 40000000000000000000000 0.961662996
* k7 z1 b" r4 `1925320391606803968923 100000000000000000000000 0.96198374/ U+ ~5 C7 {) V) z: j
18435599767349200867866 1000000000000000000000000 0.962769828& q# J+ Z% X" z
176846309399143769411680 10000000000000000000000000 0.96352742281009973617214866335650
" F* c! k, Q* g5 H. N1699246750872437141327603 100000000000000000000000000 0.96425691176903836741063255218860
' J4 c9 k8 N0 Q) L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
8 u% c) C2 b) D! V所以无穷大时p(n)≈n×(lnn+lnlnn-1)成立/ d. }8 y6 D& Q& a! V: L" l
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?9 e. A+ i! \8 `. b8 s) E3 I2 x7 ]3 J$ \
我坚持无穷大时p(n)≈n×(lnn+lnlnn-1)
, F( i3 l( p: `* R0 d Z |
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