A070849 Smallest prime == 1 mod (5n).

11, 11, 31, 41, 101, 31, 71, 41, 181, 101, 331, 61, 131, 71, 151, 241, 1021, 181, 191, 101, 211, 331, 461, 241, 251, 131, 271, 281, 1451, 151, 311, 641, 331, 1021, 701, 181, 1481, 191, 1171, 401, 821, 211, 431, 661, 1801, 461, 941, 241, 491, 251, 1021, 521

Offset: 1

Author

Amarnath Murthy, May 15 2002

Keywords

• nonn

Links

• Robert Price, Table of n, a(n) for n = 1..5000

Crossrefs

Cf. A070846, A070847, A070848, A070850, A070851, A070852, A070853.

Cf. A034694.

Programs

PARI

for(n=1,80,s=1; while((isprime(s)*s-1)%(5*n)>0,s++); print1(s,","))

Extensions

More terms from Benoit Cloitre, May 18 2002