A176940 Primes of the form 29^k + 10^k.

2, 941, 500346412961

Offset

1,1

Comments

If 29^k + 10^k is prime and k > 0, then k must be of the form 2^t. Because 29^k + 10^k is divisible by 29^m + 10^m, where m = A006519(k) and k > 0. Thus a(4) > 29^2^16 + 10^2^16. - Jinyuan Wang, May 30 2020

Links

Table of n, a(n) for n=1..3.

Prog

(Magma) [ a: n in [0..1500] | IsPrime(a) where a is 29^n+10^n ]

Crossrefs

Sequence in context: A070922 A332192 A258586 * A337309 A172386 A079233

Adjacent sequences: A176937 A176938 A176939 * A176941 A176942 A176943

Keyword

nonn,bref

Author

Vincenzo Librandi, Apr 29 2010

Status

approved