A215437 Primes of form 5^k + k^5 - 1.

5, 367, 2012173, 1221074417, 7450580596938177031

Offset: 1

Author

Vincenzo Librandi, Sep 03 2012

Keywords

• nonn

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..7

Programs

Magma

[ a: n in [0..250] | IsPrime(a) where a is 5^n + n^5 - 1 ]

Mathematica

Select[Table[5^n + n^5 - 1, {n, 0, 500}], PrimeQ ]