Observant "Foghorn Leghorn" <[EMAIL PROTECTED]> asks:
> I noticed that P587 is no longer on Geroge's ECM factoring page, but there
> is no factor listed. Did someone else find a factor?
Robert Silverman sieved it by SNFS. CWI did the linear algebra.
C(2,587+)
2769467 13119770765051463547
* C151 = prp71 * prp80. SNFS Silverman/CWI
58304599029582814346174509784805811323612591021863318902938306546239131
79700481573792089991933884278502015980406487362166583968208410611454698961420697
Conrad Curry is recruiting volunteers for M617 by SNFS.
CWI is doing 2,1186L and 2,1198L.
[2,1198L denotes 2^599 - 2^300 + 1, a divisor of 2^1198 + 1.]
These will complete 2,n+- for n <= 600 and 2,nLM for n <= 1200.
Under ten composite b^n +- 1 with b <= 12 and b^n <= 10^180
remain in the Cunningham table.
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