[seqfan] A075323
Don Reble
djr at nk.ca
Wed Nov 26 06:07:25 CET 2014
(Yep, A075321-3 are wrong.)
> %C A075323 Question: Is every [odd] prime a member of some pair?
Perhaps not. In the first 40982 pairs, every odd prime below 1000000
appears, except for 2683 and 2687. Maybe they never appear.
On the other hand, there are some surprises, such as pair #1006.
1003 16421 18427
1004 16453 18461
1005 16573 18583
1006 659 2671
1007 16603 18617
1008 16381 18397
1009 16619 18637
--
Don Reble djr at nk.ca
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