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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.$ E9 O! \7 j9 e5 |9 Z1 e
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.
) p! N2 G7 O- B0 n' Np(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) A& o/ L! ^. } j8 E
k=lnn+lnlnn-p(n)/n8 Q* Z" u( k" U6 K- S& N
n值 p(n)参考范围 计算的k值
" S7 H# o( i$ U! W+ S2 N4 10 -0.787071379 v0 l g% a1 Q; F I6 ^, R$ G
10 29 0.236617538
' h0 x n8 i4 w1 [, M# u: ]/ A24 90 0.584322837
9 `; G; f5 y6 s$ |- J" A2 J4 ~1 ~25 100 0.387908001
9 ^6 T% [ P2 f N Y! L4 {100 541 0.722349812
, W" F7 F' J! b+ |* \4 ?154 900 0.809598015
" G1 ~( ?* p# {/ t8 [168 1000 0.805511381
/ X5 N- d- A; q1 z6 V5 `500 3571 0.8995107640 a( V! E# F* m: B% Q% a
1000 7919 0.921400013' P) h, K7 ]0 j6 C
1117 9000 0.909640998" G7 }( @0 {6 H+ [$ ]# E
1229 10000 0.939318112
& ^* ?+ P: L- ~9 j% u* R5000 48611 0.93708004
/ a) ?, h% t* {6 m4 g! H' [" g8713 90000 0.948434316
- }! e+ r9 W. u- w6 h4 u9592 100000 0.959124075' m F/ \" s8 |( A' W. J* `
9592 100000 0.959124075, K0 M2 a. \, M/ v! t; y
10000 104729 0.957767178
0 O" T. w& L! J6 [+ e) {+ o30000 350377 0.962732035
: u, ~1 `9 p" o7 H: y7 r50000 611953 0.962094066+ o4 h7 g; ?9 |( z8 n+ e" [0 w# C
70000 882377 0.962864732
3 ?* R& L D3 V71274 900000 0.960576676
2 v) j5 k- O) y9 }78498 999983 0.954084756
" v" U8 Q1 [& D90000 1159523 0.958252788
3 k- G: p4 C. G8 @/ Q3 L0 Y0 y0 |100000 1299709 0.9593058235 q* [( I" J$ s5 L9 e4 Q4 b
200000 2750159 0.957211231* Z& o5 W- B, M( H2 F5 ^7 y$ Q) a& ]' J
300000 4256233 0.958706515 z& L) D& I+ N! x- z
400000 5800079 0.956189157/ |1 n K+ S% k5 o
500000 7368787 0.95910728
6 f/ C3 z" h2 q; I# C2 |2 E- q! d600000 8960453 0.958712825* }" w0 L, G3 }# ]5 m7 _$ H# e
602489 9000000 0.959219949
6 J6 z0 n0 j3 m9 v) {* j664579 10000000 0.955559154
9 f8 ?" i2 O& t% ~- o+ d6 G700000 10570841 0.957269999
/ B' T7 T" t0 A4 U5 [8 H800000 12195257 0.9578041422 ~# K& M4 A& C% I. |
900000 13834103 0.957060924) f) a* a, x% Q
1000000 15485863 0.955439472
0 I, Y8 |/ u; e3 e( I" k0 e4310144 73473859 0.956066856
' l' c7 n7 r, Y# c0 |5216954 90000000 0.9547144587 ?7 S1 y8 H) _
5761455 100000000 0.955107932
3 s) v o6 v" j& \* N10000000 179424673 0.955570945 d s: o+ ?6 p7 q
28944316 551987369 0.954016283& u: f0 l% K. w8 v; B4 H, c Q
31255985 598608349 0.954181883! A; k5 M' g- f5 z4 F
46009215 900000000 0.953469255
# r6 q, V2 F% A+ s" U: G& `50847534 1000000000 0.953771771
1 h. I' F0 w# _3 D4 H: M! Z$ d S2 ?: }62106578 1234567890 0.9534237936 s) n3 `4 S4 J% n8 q
100000000 2038074743 0.953407301
# J2 _& m' X6 _: x" m* Z8 H. i8 b* g111111111 2276855641 0.953517847
6 j3 |0 P4 H8 W x2 N, C123456789 2543568463 0.9533454532 r2 c% m: _/ p J
399487944 8724310144 0.95293163
1 n7 N* ?1 g7 J4 B411523195 9000000000 0.952872778
) _, ?! p# P. r* {449689285 9876543210 0.952957054
+ l+ O# {$ L; F455052511 10000000000 0.952960865
: j+ p$ H# b5 K! v/ p498388617 11000000000 0.952836503' U9 C7 B" Q/ S/ e
541555851 12000000000 0.952792438
. J+ T6 z* {8 A$ P551987369 12242181113 0.952827232% P. r* g! k* l# M4 c) e
675522133 15125167433 0.95280727
8 g8 D4 l- H( V9 q5 Q" U1000000000 22801763489 0.952759371: C. j: S4 T) h. e8 O
1111111111 25458070277 0.952691408
9 q1 g& R% A% ]4 a, ?1234567890 28423087477 0.952659797
; w A' j- C& o8 A+ J' F2031255985 47824232591 0.952633346* N8 g; o2 L M7 X: y
3722428991 90000000000 0.952632842
: y8 h8 J5 a0 o! X2 m+ j& q! l# C4118054813 100000000000 0.952661953
" `) n W9 S `& p* w) ?4512105232 110000000000 0.952609693
# {" @% Y. z" R3 z o: z4904759399 120000000000 0.952630576* V& d2 b, l4 I
8724310144 218695452037 0.952688936
5 \0 K2 U( \+ M- ]( P+ E% P, _0 @9000000000 225898512559 0.952686974/ U; c: y% n5 l7 ?' L$ I
9876543210 248857367251 0.952697866
1 `+ {) u+ m Q+ m% ]+ \. J10000000000 252097800623 0.952688406% j# Z/ j% @! k
11111111111 281329920307 0.9527014682 T3 H4 E6 N) q+ y8 l; {. c4 C) | h
12345678910 313945524931 0.952711638
' R; w7 Q. w8 ]! S15125167433 387829275881 0.952732747
3 T6 w0 G$ j- l, F2 w/ N9 R- g/ }$ C24188924259 632071564697 0.952803332
/ A4 }. f- Q1 Y: Z4 L1 `' z33981987586 900000000000 0.952856627. ` g- N; Z8 }- Q0 t
37607912018 1000000000000 0.952882443
. G$ `3 a8 Y: A7 E41220703418 1100000000000 0.952898557
2 s5 a4 n0 x5 C! J" u' S$ p44821651132 1200000000000 0.952913749' O5 W( T4 b- d
48411812843 1300000000000 0.952928255
' r+ G( s+ x1 _) ]# M. t51992079337 1400000000000 0.952943276- @7 ]" i D! U6 Y a( c* Z
55563209929 1500000000000 0.952959823, A B& a) ~/ A1 k; l
59125832286 1600000000000 0.952965859 Z. y8 s6 A3 ^, N/ G5 I
62680547806 1700000000000 0.952978131
$ H6 X% O; W; j66227858344 1800000000000 0.952997051
. O! I4 j( h$ r7 J( | `5 E69768165361 1900000000000 0.953005511
" P* K- k5 h6 `73301896139 2000000000000 0.953018171! a6 F( M3 c" I5 X! A
76829404177 2100000000000 0.9530348779 M/ r# x- Q& ~1 f: `/ ~3 l
80350940550 2200000000000 0.9530315767 _5 A: ~, k P0 H) G( e2 i
83866890515 2300000000000 0.953043799% C$ b) F" ~3 O9 i( o9 ^' d: B& R
87377470252 2400000000000 0.95305485
) n2 c( v7 W, d3 \! P9 v8 z90000000000 2474799787573 0.95305936
" E% y v2 {, {- R; j: l90882915772 2500000000000 0.9530638525 |) D5 m! X; B
94383447111 2600000000000 0.95307122/ @- v% F/ O/ ?
97879280182 2700000000000 0.953081213
6 ]: k* B# A. o98765432109 2725369633577 0.9530831069 |" W6 J2 g& X6 f) n3 M# j4 R" l) _
100000000000 2760727302517 0.9530907161 ?1 G3 P* l+ ? g
101370585277 2800000000000 0.953089006* t, Y" x5 x$ w+ t# j' w& P, z
104857545428 2900000000000 0.953097652
/ u% _" r7 P4 r) V108340298703 3000000000000 0.953101171( ]- y+ b/ w* g4 I. x
111819048275 3100000000000 0.953113895
C4 O4 S$ k# o7 [, I115293888086 3200000000000 0.953123695, T2 T* u% w& j6 r5 \
118764942011 3300000000000 0.9531292670 ?2 @9 q& A& H
122232349643 3400000000000 0.953135088
2 i' Q c- ?, T- A# y& M125696244675 3500000000000 0.95314551
' J1 f* \% \" L# H( d129156678096 3600000000000 0.95314744( J; E5 q* G9 m- ?
132613795649 3700000000000 0.9531511377 \, e$ }3 d. Q/ o6 H3 ~# r; N& g; W
136067688083 3800000000000 0.953155352# b0 N! K; {* J: P) ~% I6 X; P
139518461664 3900000000000 0.953163273
/ Q1 T. W* n/ f0 \6 b142966208126 4000000000000 0.9531758135 t+ W5 g' p/ Z; Y' ?% |- G' D
146410910264 4100000000000 0.953173082
# }# }+ K$ O$ w+ o149852773964 4200000000000 0.953181021
* j# n& L% E( q153291810623 4300000000000 0.953187137
5 ?( c) b& n- T* G156728136258 4400000000000 0.953200097 \0 l8 U4 K( L5 N& n5 ^* F
160161747327 4500000000000 0.953206672
* u$ c; u/ V5 y" F7 t2 \163592692077 4600000000000 0.953204523
8 H% \# n2 J; V0 D8 _( A4 u% _167021151370 4700000000000 0.9532151364 S8 n o! `! i
170447066694 4800000000000 0.953217788
. ?! t" a$ u# Y3 ]173870573446 4900000000000 0.9532263410 [0 [9 A/ b; Q$ ]! |
177291661649 5000000000000 0.953230035
1 q0 a& i4 z7 x! u; z& }4 r180710431905 5100000000000 0.953237157
5 W' Y2 A; g, g1 F184126901158 5200000000000 0.953242428
9 q% }, I, Q9 |( C% t' B# k- q5 l187541119457 5300000000000 0.953246415( j* T4 s, M j( B6 }8 O0 Y6 G
190953126302 5400000000000 0.953248309
: p. K+ y4 e7 k8 g, G5 H194362990637 5500000000000 0.953252061% S) r) Y8 C4 {6 u
197770743547 5600000000000 0.9532559839 F" `3 D) N$ q, G4 ?7 |
201176428961 5700000000000 0.953260598, v2 K$ c- Y; e8 |! S; L( c: h$ A
204580066580 5800000000000 0.953263125
! A V+ C# \8 u$ t2 v$ S" r) W207981734215 5900000000000 0.95326937
: s" M( m, C9 h# g+ d$ x* |211381427039 6000000000000 0.95327346* a9 ]- N( P2 c* z# q4 V- N( ^
214779167476 6100000000000 0.953273786; [6 S7 R7 H8 O" K
218175058254 6200000000000 0.953279837
3 P+ i0 z" ~! r3 _2 Q W z8 j( O4 A221569102517 6300000000000 0.953287444
$ }/ {/ ?" h( p2 V224961273873 6400000000000 0.953288951
6 h/ @; q! ~9 X3 B, ^. L$ ?228351698532 6500000000000 0.953296988' n. _, p1 z" C* F0 Z$ P Q7 l
231740339225 6600000000000 0.953302771, I% B& A' N: v7 ?; c
235127223891 6700000000000 0.953306312% S1 y/ V$ f& P3 M
238512407609 6800000000000 0.9533110954 U3 K4 u5 y# D3 t$ M3 Y
241895851648 6900000000000 0.953309053/ Y3 F+ e$ A. H% w% v& a
245277688804 7000000000000 0.953313329
# e. y7 l Y1 |) ~248657916582 7100000000000 0.953320369; [! J( J/ ^& O7 u% }0 u0 c+ ^
252036515078 7200000000000 0.953324842
8 F/ j8 o" F0 e3 b; c255413505374 7300000000000 0.953326527
9 \, }- f6 w2 `( o9 O- Q! H$ y3 K258788925595 7400000000000 0.953327242/ |) y# r! Y: M
259656817434 7425719040829 0.9533292385 a% N( x7 _5 P1 V
262162841215 7500000000000 0.953331879$ R) i" b4 C$ ~, Q" T' P7 J& S
265535241952 7600000000000 0.9533367& R% j# T( k/ L8 k- d( L8 ]
268906152117 7700000000000 0.95334203: f. X2 M1 f$ _8 b. n) B: y
272275559525 7800000000000 0.953344261
6 p0 H: i& O5 M$ T4 Y, I7 p% L275643544693 7900000000000 0.9533500046 _4 { A; A% e) n2 K; n( ?& |1 f. u
279010070811 8000000000000 0.9533531245 x6 [% \! S! g
282375171661 8100000000000 0.9533552516 Q( V" Y4 o( ~+ ?- k3 v! z
285738881494 8200000000000 0.9533580423 n: U6 {5 q$ S) f; z4 K, T& y
289101209285 8300000000000 0.9533605268 m: G; h6 c, Y5 X1 b
292462199848 8400000000000 0.953365471
2 Z6 e; {" F( v+ {! v6 X9 t* J295821814466 8500000000000 0.953367157" k4 ]3 R/ n& J- L4 G, \0 X/ t
299180106058 8600000000000 0.9533692790 t( V2 q' ], W
302537108851 8700000000000 0.953373572
/ Z0 z4 L: ~$ s. E; }$ T3 Q# e9 b305892791866 8800000000000 0.95337538 c" _5 m+ }2 s
309247216816 8900000000000 0.95337922
# ?+ `. N$ i3 q; h312600354108 9000000000000 0.95338074$ g. E3 V$ t( f; F! X
315952260435 9100000000000 0.953383952
8 w/ J' o- Z2 |' J- t h319302948414 9200000000000 0.953388614
$ I5 L1 E, U a8 H, m322652410741 9300000000000 0.953392682
J4 T) Y& z1 }9 G s326000647688 9400000000000 0.953394916
& n# K9 O" F4 \3 U, i329347709593 9500000000000 0.9533986977 i5 I! @8 r w5 h, Q( d* f
332693561966 9600000000000 0.953399676
: e9 W1 k2 |' U4 [2 A; H9 P/ ^- O336038264769 9700000000000 0.953402105
. V$ w% j' g# ?- [339381817251 9800000000000 0.953404747/ e+ k, J/ A+ V9 T: A
342724224549 9900000000000 0.953406947) B' E8 M6 Z7 f6 s
346065536839 10000000000000 0.953411996% h0 `8 T+ U) Q3 V+ B$ `) r% i% o+ R
379418886337 11000000000000 0.953438621) ^# s0 w- G) T* F: `3 s, I
511905471132 15000000000000 0.9535272637 T: l9 w. H/ R) R
643217611048 19000000000000 0.953596753; e3 k5 O8 i7 }2 m' o7 z O6 D
675895909271 20000000000000 0.953610735
* ~' U8 T; c2 F( b6 v+ n773621469799 23000000000000 0.953652834
4 ~7 \! G4 Z1 l" v* d9 e+ g886674661126 26486412297029 0.953696348
0 E r$ e7 }& O. j887114276903 26500000000000 0.953696396, S% x: O" M4 b" R# Z& f
900000000000 26898370231697 0.953701247( b: |( f" |9 \2 ~% c
932911185326 27916701633581 0.953711916- v4 Q1 J f: U4 i6 b1 h3 s
967879555617 29000000000000 0.953724541
! l& e: h% i3 R6 e7 x$ B1000000000000 29996224275833 0.953735935
) f$ w4 G. V# f$ {1000121668853 30000000000000 0.953735897( n$ N& }* K6 j" |
3204941750802 100000000000000 0.954126498
" }6 U5 x( ~) q& e& m% q; M2 R- J10000000000000 323780508946331 0.954537117
|; M: q M1 G9 Y29844570422669 1000000000000000 0.954950335
3 g ?: E1 V# ]100000000000000 3475385758524527 0.9554234920 D$ n. T3 v4 \+ u& t9 Z! c/ [1 \
279238341033925 10000000000000000 0.955833997' ~) H W6 K$ F: V0 w, k1 M l2 t
547863431950008 20000000000000000 0.956106462
, z& N& {5 T" m; k# ^1000000000000000 37124508045065437 0.956350996
0 \ b r* \0 ~5 F }1075292778753150 40000000000000000 0.95638055
/ q2 t% n( n) M5 m( J2623557157654233 100000000000000000 0.9567445272 d1 d( i2 t. H5 ~# D2 T. d
3893882469583623 150000000000000000 0.9569058847 o I, `! e6 g r7 q, q! a
10000000000000000 394906913903735329 0.957291265! E$ u# M# A4 u
24739954287740860 1000000000000000000 0.957660554# ~" b/ b8 d2 J$ j, B
48645161281738535 2000000000000000000 0.95793517
5 g- d/ |% z2 I' b, B72254704797687083 3000000000000000000 0.958095337 ^& W- ?; d! h6 R- l! C7 r
95676260903887607 4000000000000000000 0.958208716% v7 h* R. ]+ R+ @* o
100000000000000000 4185296581467695669 0.958226556
8 s" ` ]! W1 I$ B118959989688273472 5000000000000000000 0.958296529
5 Q7 }0 |* Z) f: c1 J3 ]9 [142135049412622144 6000000000000000000 0.958368158
/ L, s2 Q. t- |$ P# J165220513980969424 7000000000000000000 0.958428646
6 j8 Q# c1 E& S& ~3 e6 ~188229829247429504 8000000000000000000 0.958480986
% A* M$ y7 n$ z211172979243258278 9000000000000000000 0.9585271
. h9 l) c/ w+ u2 W d s0 E( R& l234057667276344607 10000000000000000000 0.9585683155 r& y* u* Z' Y0 h# m% f9 Z
460637655126005490 20000000000000000000 0.958838542
; w3 V" W5 t" P; t# q* r; z4 _684559920583084690 30000000000000000000 0.958995813
3 N w# Y9 t6 N, L706849401776940275 31000000000000000000 0.959008504
2 Y" `1 s B: ~* Y906790515105576571 40000000000000000000 0.959107022& J4 u2 p b1 n3 A$ W* e
1000000000000000000 44211790234832169331 0.9591456424 [* f7 c" h1 D6 v7 D% ?! E
1127779923790184543 50000000000000000000 0.959193055
0 \6 G q6 O5 [! H# e+ N9 o/ h2220819602560918840 100000000000000000000 0.959458995
8 ~3 _* w& ]% A f9 ^3516585752930430595 160000000000000000000 0.9596381558 Z# c u, _" t) W7 H
3731397829842461168 170000000000000000000 0.959661194
5 m( f G( e$ \$ q3945938652811699917 180000000000000000000 0.95968292 ^+ M9 }) L5 o$ g) F7 o( H. ?
4374267703076959271 200000000000000000000 0.959722871% ~9 U# ]1 l/ g, ?! q
4588082544160859769 210000000000000000000 0.959741366
+ q' a; w+ E- y$ J& U. W1 S5654086442526321042 260000000000000000000 0.959822191 z. C8 o+ _ ?+ F1 j$ M% ^
5866733862193360875 270000000000000000000 0.9598364542 P/ c* ?5 V! C( B! F* D) B$ L- M2 p
6503696293016202398 300000000000000000000 0.95987623* A& L: M' X: V1 ^* d0 }0 s/ N
6715709842660010419 310000000000000000000 0.9598886 z' i4 M% F3 k8 A" P6 i
6927578466326617308 320000000000000000000 0.9599005710 K% j! h- T$ x6 l( S; {
8617821096373621600 400000000000000000000 0.959984581
6 N% U( Y6 \3 [10000000000000000000 465675465116607065549 0.96004168
) B/ ]6 O+ ]& Z& G10720710117789005897 500000000000000000000 0.960068355* J) c) s T$ z. z7 @2 ~* [8 D; E& r4 O
12814731195053369962 600000000000000000000 0.960136628. t# a, x, T+ N6 M8 Z3 d
21127269486018731928 1000000000000000000000 0.960327059
5 G$ {: k+ T3 J41644391885053857293 2000000000000000000000 0.960583407+ T" U+ }" ]* @% k$ T
82103246362658124007 4000000000000000000000 0.96083734
% j( H3 E) F% ~7 v: S( H' ? D8 t* H$ S100000000000000000000 4892055594575155744537 0.960910633
- ], N" T0 V+ O2 S, \6 M201467286689315906290 10000000000000000000000 0.9611692326 Q7 k, e- }/ F( q
299751248358699805270 15000000000000000000000 0.961314699! E% T% V, }7 ?' U
397382840070993192736 20000000000000000000000 0.9614173855 o- p3 t/ z$ T5 o( B: q: P1 o
783964159847056303858 40000000000000000000000 0.961662996 ^. @( a" n6 j9 C
1925320391606803968923 100000000000000000000000 0.961983745 L6 h. S6 I- G. b4 }
18435599767349200867866 1000000000000000000000000 0.962769828 i& o, [% C& W! [. s
176846309399143769411680 10000000000000000000000000 0.96352742281009973617214866335650* f8 j: g% u q Q) C6 t
1699246750872437141327603 100000000000000000000000000 0.96425691176903836741063255218860 T3 t0 p; _. s; A0 Q( o
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' o6 z7 i3 \. S/ J
所以无穷大时p(n)≈n×(lnn+lnlnn-1)成立
6 e8 Q1 t# ?4 P8 @! 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?
. z- ~% F/ Z2 f& B- W" I5 t我坚持无穷大时p(n)≈n×(lnn+lnlnn-1)
$ e2 W0 }9 }; a |
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