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

1,1

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.

Sequence in context: A157844 A263039 A241607 * A172715 A257153 A257160

Adjacent sequences: A140655 A140656 A140657 * A140659 A140660 A140661

Keyword

nonn

Author

Vladimir Shevelev, Jul 10 2008

Extensions

More terms from Amiram Eldar, Jun 24 2019

Status

approved