mersenneforum.org - View Single Post - Tell yafu to start with specific B1 for ECM

charybdis · 2021-04-10, 12:58

The -B1ecm option only affects ecm(), not factor().

You can use -work to specify how much ECM has already been run on a number: -work 30 would mean that ECM is already complete to the 30-digit level, so factor() would start at the 35-digit level, i.e. B1=1000000.

2021-04-10, 12:58	#2
charybdis Apr 2020 19·37 Posts	The -B1ecm option only affects ecm(), not factor(). You can use -work to specify how much ECM has already been run on a number: -work 30 would mean that ECM is already complete to the 30-digit level, so factor() would start at the 35-digit level, i.e. B1=1000000.