A274513 a(n) is the only number m such that 11^(2^m) + 1 is divisible by A273949(n).

0, 3, 1, 5, 5, 2, 7, 4, 15, 14, 3, 8, 19, 11, 10, 24, 27, 8, 19, 23, 7, 16, 31, 35, 4, 29, 28, 11, 11, 28, 35

Offset: 1

Author

Arkadiusz Wesolowski, Jun 25 2016

Keywords

• nonn
• more

Crossrefs

Cf. A273949.

Programs

PARI

forstep(p=3, 10^15, 2, if(!Mod(p, 11)==0, if(isprime(p), o=znorder(Mod(11, p)); x=ispower(2*o); if(2^(x-1)==o, print1(x-2, ", ")))));