A064229 Smallest prime p associated with A064164(n).

61, 71, 83, 23, 59, 61, 661, 23, 71, 20639383, 439429, 521, 79, 811, 1697, 14557, 1080941, 257, 2281, 50989, 67411, 137, 83, 14029308060317546154181, 57554485363, 59, 70552493296669, 59, 694763, 293, 6007711, 12893, 1021, 149, 71, 24324571, 9293, 12318573951317236818169524329

Offset: 1

Author

N. J. A. Sloane, Sep 23 2001

Keywords

• nonn
• easy

Examples

			8!+1 = 61*661 and 61 is not 1 mod 8, so the first term is 61.
		

Links

• Amiram Eldar, Table of n, a(n) for n = 1..120

Programs

PARI

choose(n) = {my(f=factor(n!+1)[, 1]); for(i=1, #f, if(f[i]%n != 1, return(f[i]))); 0; }
lista(nn) = for(k=1, nn, if(choose(k)>1, print1(choose(k), ", "))); \\ Jinyuan Wang, Oct 03 2019

Extensions

More terms from Don Reble, Sep 23 2001