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Old 2009-01-12, 05:22   #2
Batalov
 
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Mar 2008
Phi(4,2^7658614+1)/2

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The probability of a p41 with 904 B1=1e6 curves is ~0.1. Not very rare.

If the c81 splits p41.p41, then I'd say you had something (a 3-brilliant split).

Ah. Alas, no...
Using B1=1000000, B2=1045563762, polynomial Dickson(6), sigma=161802477
Step 1 took 1828ms
********** Factor found in step 1: 1766409430355415794746950731
Found probable prime factor of 28 digits: 1766409430355415794746950731
Probable prime cofactor ((10^121-8363)/57315926928065111052544509749282072073751)/1766409430355415794746950731 has 53 digits
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