[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



More information about the SeqFan mailing list