1,1

No further terms up to 2*10^11 - Helmut Richter (richter(AT)lrz.de), May 17 2004

Helmut Richter, Title? (1)

Helmut Richter, Title? (2)

Primes p such that 10^(p-1) == 1 (mod p^2)

Analogous sequence for base 2 instead of 10 (Wieferich primes): A001220. First members of analogous sequences for all bases: A039951.

Sequence in context: A157587 A054702 A140015 this_sequence A142801 A057632 A024045

Adjacent sequences: A045613 A045614 A045615 this_sequence A045617 A045618 A045619

bref,hard,nonn,nice

Helmut Richter (richter(AT)lrz.de)