A108253 Numbers k such that little googol + k is prime.

277, 331, 447, 525, 577, 627, 643, 811, 897, 921, 937, 955, 1017, 1095, 1131, 1137, 1213, 1347, 1477, 1533, 1551, 1621, 1813, 1857, 1911, 2071, 2083, 2157, 2167, 2185, 2193, 2205, 2257, 2277, 2391, 2431, 2443, 2457, 2475, 2535, 2655, 2667, 2953, 3003

Offset

1,1

Links

Amiram Eldar, Table of n, a(n) for n = 1..10000

Formula

A little googol = 2^100.

Mathematica

With[{c=2^100}, Select[Range[3100], PrimeQ[c+#]&]] (* Harvey P. Dale, Jan 09 2014 *)

Prog

(PARI) g(n) = forstep(x=1, n, 2, if(isprime(2^100+x), print1(x", ")))

Crossrefs

Cf. A108254.

Sequence in context: A166192 A186466 A045022 * A108255 A152715 A139654

Adjacent sequences: A108250 A108251 A108252 * A108254 A108255 A108256

Keyword

easy,nonn

Author

Cino Hilliard, Jun 17 2005

Status

approved