A105059 - OEIS

A105059

Numbers n such that 100000n - 1 is prime.

2, 6, 8, 12, 14, 18, 26, 27, 30, 35, 48, 50, 56, 68, 78, 81, 99, 102, 111, 116, 119, 125, 134, 135, 137, 144, 159, 170, 182, 189, 194, 200, 210, 212, 221, 225, 228, 240, 242, 249, 251, 261, 266, 267, 278, 281, 294, 300, 302, 303, 312, 314, 321, 327, 338, 341

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..56.

EXAMPLE

If n=2, then 100000 * n - 1 is prime.

If n=78, then 100000 * n - 1 is prime.

MATHEMATICA

Select[ Range[ 343], PrimeQ[100000# - 1] &] (* Robert G. Wilson v, Apr 05 2005 *)

PROG

(PARI) is(n)=isprime(100000*n-1) \\ Charles R Greathouse IV, Jun 13 2017