A140658 Overpseudoprimes to bases 2 and 3.

5173601, 13694761, 16070429, 27509653, 54029741, 66096253, 102690677, 117987841, 193949641, 206304961, 314184487, 390612221, 393611653, 717653129, 960946321, 1157839381, 1236313501, 1481626513, 1860373241, 1921309633, 2217879901, 2412172153, 2626783921

Offset: 1

Author

Vladimir Shevelev, Jul 10 2008

Keywords

• nonn

Comments

From the first 19 strong pseudoprimes to bases 2 and 3 (A072276) only 6 are overpseudoprimes to the same bases.

Links

• Daniel Suteu, Table of n, a(n) for n = 1..10000 (terms 1..105 from Amiram Eldar)
• Index entries for sequences related to pseudoprimes

Crossrefs

Intersection of A141232 and A141350; subsequence of A072276.

Cf. A001262, A020229.

Extensions

More terms from Amiram Eldar, Jun 24 2019