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回复蔡家雄:
谢了
我查到如下宝贵资料:,供你参考.
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Table[PrimePi[10^n], {n, 0, 16}]
(* Second program (Mma [V.11] can't compute for n > 14): *)
Unprotect[PrimePi];
PrimePi[10^13] = 346065536839;
PrimePi[10^14] = 3204941750802;
PrimePi[10^15] = 29844570422669;
PrimePi[10^16] = 279238341033925;
PrimePi[10^17] = 2623557157654233;
PrimePi[10^18] = 24739954287740860;
PrimePi[10^19] = 234057667276344607;
PrimePi[10^20] = 2220819602560918840;
PrimePi[10^21] = 21127269486018731928;
PrimePi[10^22] = 201467286689315906290;
PrimePi[10^23] = 1925320391606803968923;
PrimePi[10^24] = 18435599767349200867866;
PrimePi[10^25] = 176846309399143769411680;
PrimePi[10^26] = 1699246750872437141327603;
PrimePi[10^27] = 16352460426841680446427399;
Table[PrimePi[10^n], {n, 0, 27}]
(* Jean-Fran?ois Alcover, Nov 08 2016, from latest b-file *)
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可能你的版本不够高,
看来PrimePi可以计算到 10^27
我想计算的不是 10^n,而是素数连乘积
我正忙于轮式因数分解的相关计算,暂时不能做验算了,
稍后再讨论.
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