A378866 Numbers k such that 5^k + 72 is prime.

0, 2, 3, 118, 498, 1023, 4262, 6094, 6382, 26334, 56062

Offset

1,2

Links

Table of n, a(n) for n=1..11.

Example

3 is a term because 5^3 + 72 = 197 is prime.

Mathematica

Select[Range[0, 5000], PrimeQ[5^#+72]&]

Prog

(Magma) [k: k in [0..1000] |IsPrime (5^k+72)];

Crossrefs

Cf. A089142, A124621, A217133.

Sequence in context: A356787 A371146 A127819 * A152838 A208247 A102697

Adjacent sequences: A378863 A378864 A378865 * A378867 A378868 A378869

Keyword

nonn,more

Author

Robert Price, Dec 09 2024

Extensions

a(8)-a(11) from Michael S. Branicky, Dec 19 2024

Status

approved