A020287 Strong pseudoprimes to base 61.

15, 217, 341, 1261, 2701, 3661, 6541, 6697, 7613, 13213, 16213, 22177, 23653, 23959, 31417, 50117, 61777, 63139, 67721, 76301, 77421, 79381, 80041, 102341, 113491, 115231, 145993, 160147, 163073, 164737, 170941, 178709, 197209, 210817, 249631, 267977, 269011

Offset

1,1

Comments

The smallest number which is a strong pseudoprime to the bases 2 (A001262), 7 (A020233) and also 61 (here) is 4759123141 [Jaeschke]. - R. J. Mathar, Apr 05 2011

Links

R. J. Mathar, Table of n, a(n) for n = 1..202

Gerhard Jaeschke, On strong pseudoprimes to several bases, Mathematics of Computation, 61 (1993), 915-926.

Index entries for sequences related to pseudoprimes

Crossrefs

Cf. A001262, A020233.

Sequence in context: A395657 A351515 A081196 * A152272 A091644 A238538

Adjacent sequences: A020284 A020285 A020286 * A020288 A020289 A020290

Keyword

nonn

Author

David W. Wilson

Status

approved