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A112451
Strong pseudoprimes (base-2) equal to product of 4 primes not necessarily distinct.
1
800605, 4502485, 5310721, 7177105, 9995671, 10655905, 11473885, 13216141, 15698431, 21417991, 22564081, 29878381, 36338653, 38624041, 43397551, 45485881, 45769645, 48369727, 51340807, 57561085, 77576401, 81445585, 86067241, 90626185, 104852881, 112792519, 115007581
OFFSET
1,1
LINKS
EXAMPLE
a(1) = 800605 = 5*13*109*113.
CROSSREFS
Intersection of A014613 and A001262.
Sequence in context: A053086 A377951 A106781 * A235006 A231629 A231090
KEYWORD
nonn
AUTHOR
Shyam Sunder Gupta, Dec 12 2005
EXTENSIONS
More terms from Amiram Eldar, Nov 10 2019
STATUS
approved