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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.$ }3 g* U6 q2 X% C3 [5 c1 {" u, C
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.- b; d" R; A4 k$ t
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1 p2 y8 \- v% Q/ f0 w; {% k, j
k=lnn+lnlnn-p(n)/n8 N3 `' _3 d0 J) B
n值 p(n)参考范围 计算的k值
/ @0 N. d+ \$ v+ p1 z- r& x: m4 10 -0.787071379 E& T; x, v$ D L
10 29 0.236617538- P& v$ R( l* Q M0 Q% }; F0 @% ]
24 90 0.584322837" |" W- e3 C* ]' E
25 100 0.387908001; G' T% ?% k- b" [. ^3 d1 a! f
100 541 0.722349812. ], v4 A3 |# A2 W& u
154 900 0.809598015
; N S0 M$ |/ J$ I168 1000 0.805511381( ]4 |- ~7 S0 ~1 O% T
500 3571 0.899510764+ c3 n; |( _/ B$ L7 [: |" z$ k
1000 7919 0.921400013$ D% j1 |/ {& Q; P5 C. Y* G
1117 9000 0.9096409985 S+ ]7 T2 ]6 O- `" n8 q% }
1229 10000 0.939318112( L' B3 j2 E$ L' E) G
5000 48611 0.93708004
# U- X9 M. V/ q2 K7 c8713 90000 0.9484343162 ^- k; g* G+ ~
9592 100000 0.959124075/ c. j; ?! O& G8 s; u
9592 100000 0.959124075 O/ M2 D) F7 x7 C; z2 v
10000 104729 0.957767178" C& r) ?. S7 i/ `$ W
30000 350377 0.9627320357 ]: i$ A& v2 k6 I4 o
50000 611953 0.962094066
% F6 j7 f8 `9 ]4 |% `6 D70000 882377 0.962864732
8 Z. G6 y) m" T- D4 Y0 n71274 900000 0.9605766768 Q6 D$ v2 G) ?# F2 a/ a! C) ~/ @( l
78498 999983 0.954084756
* \' E2 N: X6 v0 ^90000 1159523 0.958252788
1 H/ J+ Z0 a. x2 X, G. R7 _3 n100000 1299709 0.9593058238 \+ U5 F+ g" B+ \& Y9 P9 L6 v( R
200000 2750159 0.957211231
5 B! [9 K9 D4 G" P( O$ M& U300000 4256233 0.958706519 O8 Y J8 p2 W) T- A; s: _7 ~
400000 5800079 0.956189157 X/ p8 k" }) B
500000 7368787 0.95910728
- |; G: O- ]9 Z9 J/ p3 @) L7 o3 U1 u* W600000 8960453 0.958712825' _" I) r* S" l* X, T2 }" B
602489 9000000 0.959219949/ m' h7 x2 u( B$ Q$ ?2 [, O" _# z, P
664579 10000000 0.955559154$ Q2 i/ P6 Y. ^
700000 10570841 0.957269999 Z; w, u/ ?2 @* Q
800000 12195257 0.957804142! A3 }9 n9 ^4 c! V1 p* A! n( V( z
900000 13834103 0.9570609248 D1 U: K/ J+ q1 [
1000000 15485863 0.9554394721 G2 b% R! e7 D/ V, u1 ~
4310144 73473859 0.956066856
, X1 a3 H: Y' [! U& M. c5216954 90000000 0.954714458* R+ E/ L1 G6 H5 |/ J. [
5761455 100000000 0.955107932
5 d6 ~3 l2 v! O# }% f9 K& W$ i1 Y10000000 179424673 0.955570945. S( _+ }7 w! i9 [# X8 p$ L2 W
28944316 551987369 0.954016283' x6 S z; R4 Q/ P
31255985 598608349 0.954181883
( x/ M: {2 c8 K1 [6 l46009215 900000000 0.953469255
" }' U. l+ m3 @50847534 1000000000 0.9537717712 T0 ]2 Q# }8 C- _' V6 B
62106578 1234567890 0.953423793 g8 o# \ E3 v2 j0 G4 p
100000000 2038074743 0.953407301% S- u/ r+ k9 F0 f7 [
111111111 2276855641 0.953517847
8 Q* A; E6 j3 ?, F/ W' W; F8 d5 T123456789 2543568463 0.953345453
+ _) ~% J$ R5 o! q( n0 l# o399487944 8724310144 0.95293163
' h- R1 z) ]! e0 A411523195 9000000000 0.952872778
* B7 `; |) Q% w" F2 f& F449689285 9876543210 0.952957054# ^3 R6 O# {5 ]+ H& v, |
455052511 10000000000 0.952960865! J1 b- G( I# W F' ^3 L
498388617 11000000000 0.952836503* r: a+ v8 A- r+ F+ Q, S
541555851 12000000000 0.952792438
: H$ g8 J& q. I. y7 B551987369 12242181113 0.952827232" j8 g& R2 m1 v& y- c' M
675522133 15125167433 0.95280727
' g Y( u7 q7 x0 O1 u3 G1000000000 22801763489 0.952759371+ G- \: d5 v- L0 n- Y+ y( `; N( b
1111111111 25458070277 0.952691408: ~" s. \$ }/ h* q) X6 R
1234567890 28423087477 0.952659797
/ z# [+ B+ `) A/ V2031255985 47824232591 0.9526333467 `7 y( e8 D7 I' T
3722428991 90000000000 0.952632842
0 E: z* ]3 \0 z0 F4118054813 100000000000 0.952661953
4 v; {. I0 h% ?! {/ w" Y( n5 Z4512105232 110000000000 0.952609693$ g( @* o9 Z% S) Y& o3 o1 }
4904759399 120000000000 0.952630576
% z) u+ n% \. h; `8724310144 218695452037 0.952688936
- e6 E) r1 n: Z6 \) K3 e" ^7 q( w9000000000 225898512559 0.952686974
' q( t6 Z Y1 a; j" W# n9 s K9876543210 248857367251 0.952697866
8 }3 d/ D+ e. n* l10000000000 252097800623 0.952688406
6 [! e: m1 {" }; L11111111111 281329920307 0.952701468! {! E1 A1 O" T' ?
12345678910 313945524931 0.952711638
# H& J$ }: M# A% U5 t0 Y15125167433 387829275881 0.952732747) t8 c s, Y: _5 }) @) ?; c U
24188924259 632071564697 0.952803332- D# B) m' p, T! ^/ u) h
33981987586 900000000000 0.9528566275 m: J; \) U: S( m2 B' o# F
37607912018 1000000000000 0.952882443* I6 s+ C2 v/ W1 E) b$ R$ ]: [
41220703418 1100000000000 0.952898557* J! J$ L/ g5 _3 ~3 a
44821651132 1200000000000 0.952913749! S: C( a0 ]4 N2 w
48411812843 1300000000000 0.952928255
# U9 p- j2 n4 n9 _8 ? f1 w @51992079337 1400000000000 0.9529432763 W1 t; l: z; W
55563209929 1500000000000 0.952959823
: I* r+ B6 ~. L) M2 X59125832286 1600000000000 0.95296585. m% D; x& [0 s4 a! y& _/ z
62680547806 1700000000000 0.952978131
1 W0 F' n% y9 z# F# g: y66227858344 1800000000000 0.9529970512 ]4 W8 }# h* ^: t' g
69768165361 1900000000000 0.953005511/ K+ q, [8 x/ j. ]- p/ {
73301896139 2000000000000 0.9530181715 K" u9 ]7 V5 ?5 j2 @. v. B3 L
76829404177 2100000000000 0.9530348770 _! L' x- `6 z! Q& s! e# o
80350940550 2200000000000 0.953031576
( h1 V1 y1 q* c# z83866890515 2300000000000 0.953043799
# n7 u' v, x' }87377470252 2400000000000 0.95305485
' X5 j- F7 I2 s: A8 k( v90000000000 2474799787573 0.953059361 J, {4 C7 t% Q( B/ ]. R$ t
90882915772 2500000000000 0.9530638520 d- K& _2 U/ [, M
94383447111 2600000000000 0.95307122. O) |3 d" T8 B' F$ g
97879280182 2700000000000 0.953081213' E8 O' v' t* p1 n( E
98765432109 2725369633577 0.953083106
1 b) @# U+ `% c6 k100000000000 2760727302517 0.9530907163 g( J9 b$ {: _! h$ u7 b/ `
101370585277 2800000000000 0.953089006
7 b2 v0 P1 w E! R& Q; O7 v$ w104857545428 2900000000000 0.953097652) P0 y! b) w1 Q4 {' y2 Y- I* ^
108340298703 3000000000000 0.953101171
( r& t* {3 h9 Q6 L8 p111819048275 3100000000000 0.953113895
% j9 l% S; d" |115293888086 3200000000000 0.953123695
, H! y$ |% C( q2 I) G118764942011 3300000000000 0.953129267- P F% h. b9 ]4 v8 j3 N
122232349643 3400000000000 0.953135088
8 a! N6 i' N4 t" [2 G+ o. p% B125696244675 3500000000000 0.95314551. k" R* E$ \% N; R. Q$ p* {
129156678096 3600000000000 0.95314744
4 f3 M' L1 P2 |5 B6 E3 r" H132613795649 3700000000000 0.953151137
7 a1 g$ u" C {2 K136067688083 3800000000000 0.9531553528 a% V: }8 ~/ F
139518461664 3900000000000 0.953163273
& W" k1 r3 ^' |142966208126 4000000000000 0.953175813) a% a" P5 r8 h& x
146410910264 4100000000000 0.953173082" S p. @ z9 _, ^
149852773964 4200000000000 0.953181021- x- J9 B! U7 G& r
153291810623 4300000000000 0.953187137
0 d, H3 S. {# o% {$ G- K156728136258 4400000000000 0.95320009* j T# `3 X8 e! I4 _% _6 g
160161747327 4500000000000 0.953206672' m- P ?2 z$ y2 G& ^2 D1 |; s: v
163592692077 4600000000000 0.953204523
$ u( V+ z2 d$ i) d" u167021151370 4700000000000 0.953215136, u2 Y/ K6 N7 o# P5 \( h
170447066694 4800000000000 0.953217788
/ h; i) J3 ? s4 E1 ~7 P) Y, l173870573446 4900000000000 0.953226341
, ~: E @1 [0 E# p1 B177291661649 5000000000000 0.953230035
9 ?6 v+ h( k; L0 m180710431905 5100000000000 0.953237157) {" Q+ q" d; m l! U4 a
184126901158 5200000000000 0.953242428
5 q8 @% |$ @5 O7 S. @187541119457 5300000000000 0.9532464155 N5 d, o5 @0 Z! a3 C) H3 g
190953126302 5400000000000 0.953248309
K k- L7 `6 W: E7 q194362990637 5500000000000 0.953252061# G! b7 E; R- l" n5 C( r! b
197770743547 5600000000000 0.953255983# Z& }2 H7 C& A
201176428961 5700000000000 0.953260598
* J" b! y) ^( y- M U1 m6 X204580066580 5800000000000 0.953263125- b0 @' j0 b& V \. o1 A
207981734215 5900000000000 0.95326937: ?" |0 g$ W5 d/ X$ H7 I) I
211381427039 6000000000000 0.95327346
# U A! R( B3 n/ L( q9 N3 ^/ u214779167476 6100000000000 0.953273786
# G! f, M& n" W ~218175058254 6200000000000 0.953279837: K: v$ r; X8 x8 i9 G
221569102517 6300000000000 0.953287444
7 U' b5 j e3 K1 |224961273873 6400000000000 0.9532889514 }9 {( r! p& K* L6 ^: t4 o3 k
228351698532 6500000000000 0.953296988
/ S1 {* r7 h. L0 F/ ~6 z2 z( X231740339225 6600000000000 0.9533027712 i( k) p- Y0 J- U: v2 b$ {0 R
235127223891 6700000000000 0.953306312
! T2 F# R0 ]) C238512407609 6800000000000 0.9533110959 I' D/ ~ ]' |, {" d) K# M/ ~7 B
241895851648 6900000000000 0.953309053. Y' F) k9 b" r4 k o
245277688804 7000000000000 0.953313329# j: b) |$ ?0 U* _! J
248657916582 7100000000000 0.953320369
& d8 T& Z& o) G252036515078 7200000000000 0.953324842: o9 F5 }# r3 t" V# y' k
255413505374 7300000000000 0.953326527
6 u; S: w6 m- ?) |* Q& O; A6 `258788925595 7400000000000 0.953327242
! E9 w) r$ f( P8 f2 M; t259656817434 7425719040829 0.953329238: [# C. N. L5 f7 t$ K6 d* `
262162841215 7500000000000 0.953331879
2 ?7 P" E5 r6 S( I6 L7 e0 q265535241952 7600000000000 0.9533367! o% E5 y- X8 R
268906152117 7700000000000 0.95334203
+ Z: o+ Z( V' D& q; \0 o$ s: _3 e272275559525 7800000000000 0.953344261( o! s5 m8 I, M; Y/ T
275643544693 7900000000000 0.953350004
, L% H& b: ^9 O! k3 t6 f7 [279010070811 8000000000000 0.953353124
2 p/ A, O4 d3 _ e* G3 A8 o282375171661 8100000000000 0.953355251
0 J0 d4 Q; c" P; K+ V* O! ~285738881494 8200000000000 0.953358042
4 V4 W% @( X& h& ~2 u$ z289101209285 8300000000000 0.953360526% Y$ \" L( f8 R& ?! k# [; D8 n6 N
292462199848 8400000000000 0.9533654717 p4 V! K+ l! E$ {! `
295821814466 8500000000000 0.953367157
& @% {6 ^! ?3 t) b) _, y" T, l299180106058 8600000000000 0.953369279
$ y7 Q& e- L( }* U302537108851 8700000000000 0.953373572
; U; h) O, ]7 U5 l- |! V305892791866 8800000000000 0.95337538
4 ?( I" T3 I S1 S; ^309247216816 8900000000000 0.95337922" s" k. O* E. D% c, Q
312600354108 9000000000000 0.95338074
$ q- U! C3 S+ d; o315952260435 9100000000000 0.953383952
0 e3 e3 ]3 e/ C/ G1 l- L# @319302948414 9200000000000 0.953388614
4 |; Y; p }5 w& u, O8 j322652410741 9300000000000 0.953392682
! `8 M5 m5 n& o+ ]326000647688 9400000000000 0.953394916
( X3 z) l3 ^" D9 x) ]8 m4 H329347709593 9500000000000 0.953398697
+ R( H. E/ [9 L4 j; L: p332693561966 9600000000000 0.953399676
1 Z6 D! W% P" [! o# f336038264769 9700000000000 0.953402105
& }. g: y) V7 _/ b2 Q339381817251 9800000000000 0.953404747
3 m& `1 {' N/ h8 Y; A) o) D342724224549 9900000000000 0.953406947
# e0 t. ]6 ]+ u2 q" E4 I346065536839 10000000000000 0.953411996) G7 M6 Z/ r9 y# d* f L
379418886337 11000000000000 0.953438621* a8 d$ ~2 W# Q8 A: L
511905471132 15000000000000 0.953527263( s) p: t# d8 y/ ^) u$ r
643217611048 19000000000000 0.953596753, X* q, P3 _: F7 V+ L
675895909271 20000000000000 0.953610735
4 W9 Q) @6 C- n) w( v& h$ t773621469799 23000000000000 0.953652834
" \! l$ A& r' c! l% g886674661126 26486412297029 0.953696348: ?: ?* i$ r8 e7 g0 S- D3 b6 V5 |
887114276903 26500000000000 0.9536963968 I. x3 }: M6 u$ Y: }0 d
900000000000 26898370231697 0.953701247
& F8 N9 I+ `9 J* D/ ?932911185326 27916701633581 0.953711916
! Y, z0 J3 _/ [( Z, {. O N967879555617 29000000000000 0.953724541
6 ~0 E: ~& K. B8 k2 {1000000000000 29996224275833 0.9537359355 {3 X! S6 Q" O6 z% h3 U/ q
1000121668853 30000000000000 0.953735897
- `% K, v) _3 l% B' Z) F+ s3204941750802 100000000000000 0.954126498
' T7 ^9 @7 K. C3 e+ C, S10000000000000 323780508946331 0.9545371174 ~% g# l H0 v. D1 B$ Z+ [1 Q( t4 Z' u
29844570422669 1000000000000000 0.954950335
! d* |( p( O: r) b* O100000000000000 3475385758524527 0.955423492
0 \& W; g( A) I0 q' s279238341033925 10000000000000000 0.955833997
9 {' P3 @6 L/ g$ y$ l, W+ ]547863431950008 20000000000000000 0.956106462
Y& a0 O; G# J3 n A, c1000000000000000 37124508045065437 0.956350996
. a' i2 R$ Q3 S x# y1075292778753150 40000000000000000 0.95638055
* V" h6 @6 c" n4 J1 W0 u2623557157654233 100000000000000000 0.9567445278 O/ n, T9 Z% ^1 T3 z* a3 S7 A( z- Y
3893882469583623 150000000000000000 0.956905884
8 f8 {& D4 m; G) b10000000000000000 394906913903735329 0.957291265$ [. V7 L. }' i G$ t) }/ g, \
24739954287740860 1000000000000000000 0.957660554
, O Z) ]# ~+ o: R ~4 ^+ \48645161281738535 2000000000000000000 0.95793517; c6 s+ R9 [1 h; z
72254704797687083 3000000000000000000 0.95809533; t' d8 i5 h& T1 Q8 G4 a6 N8 V
95676260903887607 4000000000000000000 0.958208716
, n) j" M- s2 r* j& |: b/ |( _' b100000000000000000 4185296581467695669 0.9582265560 W0 Z M7 s8 t# y
118959989688273472 5000000000000000000 0.958296529
/ h/ h+ ^3 L5 I. v4 W142135049412622144 6000000000000000000 0.9583681584 H% j" f5 N" z
165220513980969424 7000000000000000000 0.9584286469 d* {' n- L e/ Q* I$ r! A
188229829247429504 8000000000000000000 0.958480986
V7 l! P; K ~211172979243258278 9000000000000000000 0.9585271$ C6 |' K# x# R
234057667276344607 10000000000000000000 0.958568315
; Z( k o- I( T+ I5 V460637655126005490 20000000000000000000 0.958838542 }) l( O9 i( ^! r7 ~" @
684559920583084690 30000000000000000000 0.958995813
; _1 R' S' g: z6 z706849401776940275 31000000000000000000 0.9590085046 d0 ?; e- A" c' p6 \
906790515105576571 40000000000000000000 0.9591070225 d! ]3 a0 ^( ^# p9 [
1000000000000000000 44211790234832169331 0.959145642" g& B( N- A! M) r" t
1127779923790184543 50000000000000000000 0.959193055* v: e+ P) f# j% K7 l! M, a
2220819602560918840 100000000000000000000 0.959458995) K/ \& @! H6 L" s
3516585752930430595 160000000000000000000 0.959638155+ h; k; A. h2 j9 ^
3731397829842461168 170000000000000000000 0.959661194' a! K# F3 d# |$ \) F2 q
3945938652811699917 180000000000000000000 0.9596829
0 \# t f5 q: C) _1 R4374267703076959271 200000000000000000000 0.959722871 |; h N( Q0 s% n0 x) E
4588082544160859769 210000000000000000000 0.959741366
5 l7 f) C+ A0 ~5 k- m5654086442526321042 260000000000000000000 0.959822191
) P1 ], `0 |( J5 S5866733862193360875 270000000000000000000 0.9598364542 b' _# ^: w" t* k, Q8 W
6503696293016202398 300000000000000000000 0.95987623. k6 p# L2 X* x6 L `! A- }, `
6715709842660010419 310000000000000000000 0.9598886
3 B2 a0 j0 r5 n' m; Q5 z$ I, P6927578466326617308 320000000000000000000 0.959900571/ H+ S) A& T& M; P
8617821096373621600 400000000000000000000 0.959984581
: `5 A, q8 g6 u% c10000000000000000000 465675465116607065549 0.960041686 s: x0 K5 y" {3 |& l
10720710117789005897 500000000000000000000 0.960068355
6 w. h" u0 J6 ?/ _6 I2 _12814731195053369962 600000000000000000000 0.9601366280 r/ G! g( e9 ?. l2 Y9 r( N
21127269486018731928 1000000000000000000000 0.960327059% v3 q' p) X4 T1 t. z3 A
41644391885053857293 2000000000000000000000 0.960583407
" }" ?9 g( i4 m# d1 f82103246362658124007 4000000000000000000000 0.96083734' c! I) l$ w1 P7 L7 J
100000000000000000000 4892055594575155744537 0.960910633
1 U4 ^( u- d& p& p K9 u( v3 L201467286689315906290 10000000000000000000000 0.961169232
1 R" \1 E |( g" H299751248358699805270 15000000000000000000000 0.961314699
2 n2 B% K0 w3 p+ ?397382840070993192736 20000000000000000000000 0.961417385 x: P& }6 n6 y# ]
783964159847056303858 40000000000000000000000 0.9616629961 s) E, |% ?3 g! _7 A2 G
1925320391606803968923 100000000000000000000000 0.96198374 ^3 @ f: S1 Y3 m2 X& g
18435599767349200867866 1000000000000000000000000 0.962769828+ ]5 H( \7 Y: @: {# O5 \6 R
176846309399143769411680 10000000000000000000000000 0.96352742281009973617214866335650
3 }+ C3 M, g) w; M3 G1699246750872437141327603 100000000000000000000000000 0.96425691176903836741063255218860
/ n! O+ P4 H# E& @0 m6 a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
% d8 z; ^- e( w S! b' K$ K所以无穷大时p(n)≈n×(lnn+lnlnn-1)成立# }$ ]1 v1 P8 r# M# y1 k
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?* E$ C! [; c* L+ ^7 j3 F/ p" T0 m# a, D
我坚持无穷大时p(n)≈n×(lnn+lnlnn-1)# }8 {. V0 e! [! P2 H
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