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Old 10-22-2010, 09:16 AM   #14
HungLikeJesus
Only looks like a disaster tourist
 
Join Date: Feb 2007
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6*n-1 of 666, where n=22
(written 22- in 6 prime notation)

(131 is a Sophie Germain prime, since 2x131 +1 = 263 is also prime.)

(The ring of integers of the field Q(sqrt(-131)) has class number 5.)
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