

A196627


Primes p such that the system of congruences { 2^x == 3 (mod p), 3^x == 2 (mod p) } has a solution.


2




OFFSET

1,1


COMMENTS

Prime divisors of the elements of A109768.
The corresponding smallest positive solutions x are given by A196628.
Some larger terms: 600827908214213, 18969653181299397175271, 1098445767808750903973251, 364947672292511454405089069, 706132008101135602203621405289, 203315521506434771079581843014801, 29579867253585988507046633033646287, 183139575629088302014027581573180839, 59813046375181769306016700165290169537, 1517811599380242183731391003255018381040066573726286733611752067380771.
This sequence has density zero among all primes. More exactly, M. Skałba showed that the number of terms in this sequence below x is O(x/(log(x))^1.0243). Tomohiro Yamada, Jul 17 2019


LINKS



CROSSREFS



KEYWORD

nonn,hard,more


AUTHOR



STATUS

approved



