A100839 Numbers k such that k^k + 10 is prime.

0, 1, 3, 7, 9, 39

Offset: 1

Author

Cino Hilliard, Jan 07 2005

Keywords

• nonn
• hard
• more

Comments

Here we interpret 0^0 as 1.

a(7) > 8672. - Daniel Suteu, Aug 06 2019

a(7) > 20000. - Michael S. Branicky, Jun 30 2024

Crossrefs

Cf. A100842 (actual primes). - Daniel Starodubtsev, Aug 05 2019

Cf. A100837, A100838.

Programs

Mathematica

Prepend[Select[Range[100], PrimeQ[#^# + 10] &], 0] (* Stefan Steinerberger, Mar 15 2006 *)

PARI

f1(n,a) = for(x=0,n,y=x^x+a;if(ispseudoprime(y),print1(y",")))