A155886 Least k such that 2^(2^k) = n (mod k).

1, 3, 14, 11, 6, 1941491, 10, 83, 31, 13, 123, 35, 71, 27, 34913, 241, 18, 8059, 34, 349, 44, 25, 39, 100867561, 76, 231, 253, 66203, 57, 227, 139, 45, 184, 37, 111, 97, 55, 41, 103, 1099, 81, 66791, 53

Offset

0,2

Comments

First occurrence of n in sequence A155836.

a(43) > 12500000. - Tyler Busby, Mar 15 2024

Links

Table of n, a(n) for n=0..42.

Crossrefs

Cf. A015910 (2^n mod n), A036236, A155836.

Sequence in context: A344116 A187772 A291796 * A319456 A222713 A138959

Adjacent sequences: A155883 A155884 A155885 * A155887 A155888 A155889

Keyword

nonn,more

Author

T. D. Noe, Jan 29 2009

Status

approved