OFFSET
1,2
COMMENTS
EXAMPLE
k = 9;
n = k^2 - k + 1 = 81 - 9 + 1 = 73;
2^9 == 1 (mod 73).
PROG
(PARI) for(k=1, 10^9, n=k^2-k+1; if( lift(Mod(2, n)^k)==1, print1(n, ", "))); /* Joerg Arndt, Jun 03 2011 */
CROSSREFS
KEYWORD
nonn
AUTHOR
Alzhekeyev Ascar M, Jun 03 2011
STATUS
approved