A112450 Strong pseudoprimes (base-2) equal to product of 3 primes not necessarily distinct.

15841, 29341, 52633, 74665, 252601, 314821, 476971, 635401, 1004653, 1023121, 1907851, 1909001, 2419385, 2953711, 3581761, 4335241, 4682833, 5049001, 5444489, 5599765, 5681809, 9069229, 13421773, 15247621, 15510041, 15603391, 17509501, 26254801, 26758057, 27966709

Offset

1,1

Comments

The term a(11)=1907851 is also a strong pseudoprime to base 5, cf. A020231. M. F. Hasler, Aug 16 2012

Links

Amiram Eldar, Table of n, a(n) for n = 1..10000

Example

a(1) = 15841 = 7*31*73.

Crossrefs

Intersection of A014612 and A001262.

Sequence in context: A061733 A229643 A216180 * A063847 A367231 A265669

Adjacent sequences: A112447 A112448 A112449 * A112451 A112452 A112453

Keyword

nonn

Author

Shyam Sunder Gupta, Dec 12 2005

Extensions

More terms from Amiram Eldar, Nov 10 2019

Status

approved