A186105 Primes of the form 3*6^k+1.
19, 109, 3889, 139969, 839809, 5038849, 1088391169, 1410554953729, 511745184538734624769, 110536959860366678949889, 2424843832394292181929418801369608880129
Offset: 1
Examples
3*6^15+1 = 1410554953729 is prime.
Crossrefs
Cf. A186112.
Comments