A251259 Numbers n such that 11*12^n + 1 is prime.

3, 4, 35, 119, 476, 507, 6471, 13319, 31799

Offset: 1

Author

Robert Price, Mar 20 2015

Keywords

• nonn
• more

Comments

a(10) > 2*10^5. - Robert Price, Mar 20 2015

Examples

			11*12^4 + 1 = 228097, which is prime.
		

Crossrefs

Cf. A079907.

Programs

Magma

[n: n in [1..600]| IsPrime(11*12^n+1)]; // Vincenzo Librandi, Mar 21 2015

Mathematica

Select[Range[0, 1000], PrimeQ[11*12^# + 1] &]

PARI

is(n)=ispseudoprime(11*12^n+1) \\ Charles R Greathouse IV, Jun 13 2017