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

Author

Shyam Sunder Gupta, Dec 12 2005

Keywords

• nonn

Comments

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

Examples

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

Links

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

Crossrefs

Intersection of A014612 and A001262.

Extensions

More terms from Amiram Eldar, Nov 10 2019