A112431 Carmichael numbers equal to the product of 8 primes.

232250619601, 306177962545, 432207073585, 576480525985, 658567396081, 689702851201, 747941832001, 1013666981041, 1110495895201, 1111586883121, 1286317859905, 1292652236161, 1341323384401, 1471186523521, 1567214060545

Offset: 1

Author

Shyam Sunder Gupta, Dec 11 2005

Keywords

• easy
• nonn

Examples

			a(1) = 232250619601 = 7*11*13*17*31*37*73*163.
		

Links

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

Crossrefs

Cf. A002997, A087788, A141711, A074379, A112428, A112429, A112430, A112432, A006931.

Programs

PARI

is(n)={bigomega(n)==8&&is_A002997(n)} \\ M. F. Hasler, Apr 14 2015