[ET_]

Originally Posted by swellman

https://members.loria.fr/PZimmermann...cm/params.html

Thank you swellman. I was asking basicly for 2 reasons:

1 - I am using mprime, not GMP-ECM: mprime has different B2 parametrization.
2 - The page at https://www.mersenne.org/report_ecm/ based on mprime work over Fermat ecm shows B1 = 800,000,000 instead of 850,000,000.

Luigi