A050977 Haupt-exponents of 5 modulo integers relatively prime to 5.

1, 2, 1, 2, 6, 2, 6, 5, 2, 4, 6, 4, 16, 6, 9, 6, 5, 22, 2, 4, 18, 6, 14, 3, 8, 10, 16, 6, 36, 9, 4, 20, 6, 42, 5, 22, 46, 4, 42, 16, 4, 52, 18, 6, 18, 14, 29, 30, 3, 6, 16, 10, 22, 16, 22, 5, 6, 72, 36, 9, 30, 4, 39, 54, 20, 82, 6, 42, 14, 10, 44, 12, 22, 6, 46, 8, 96, 42, 30, 25, 16

Offset: 1

Author

Eric W. Weisstein

Keywords

• nonn

Links

• R. J. Mathar, Table of n, a(n) for n = 1..7999
• Eric Weisstein's World of Mathematics, Multiplicative Order

Crossrefs

Cf. A002326 (base 2), A050975 (base 3), A002329.

Programs

Maple

n := 1 :
for i from 2 to 10000 do
    if igcd(i,5) = 1 then
        printf("%d %d\n",n,numtheory[order](5,i)) ;
        n := n+1 ;
    end if;
end do: # R. J. Mathar, Oct 14 2014