Primes p such that both p-2 and p-4 are semiprimes.
37, 53, 59, 89, 97, 163, 223, 239, 251, 269, 293, 307, 331, 397, 419, 449, 521, 547
5 seqfan posts
Sun Dec 7 20:31:39 CET 2008 [seqfan] Re: A080906?
Sun Dec 7 20:24:54 CET 2008 [seqfan] Re: A080906?
Sun Dec 7 08:05:05 CET 2008 [seqfan] Re: A080906?
Sun Dec 7 07:26:27 CET 2008 [seqfan] Re: A080906?
Sun Dec 7 06:50:42 CET 2008 [seqfan] A080906?
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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