OFFSET
1,2
COMMENTS
Conjecture: For k > 1, k^m == 1 - k (mod m) has infinite number of positive solutions.
Also includes 2073273696480171732497. - Giovanni Resta, Oct 04 2019
PROG
(Magma) [1] cat [n: n in [1..10^8] | Modexp(7, n, n) + 6 eq n];
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Juri-Stepan Gerasimov, Oct 02 2019
EXTENSIONS
a(12)-a(16) from Giovanni Resta, Oct 04 2019
a(17) from Max Alekseyev, Feb 07 2024
STATUS
approved