Tell yafu to start with specific B1 for ECM

bur · 2021-04-10, 10:36

I want to force yafu to start ECM with B1 = 1000000 but it just ignores my attempts.

I tried yafu factor(number) -B1ecm 1000000 and also setting the respective value in yafu.ini but it always starts with B1 = 11000

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.

bur · 2021-04-10, 20:45

Ok, thanks.

2021-04-10, 10:36	#1
bur Aug 2020 796581e-4;32539e-3 503 Posts	Tell yafu to start with specific B1 for ECM I want to force yafu to start ECM with B1 = 1000000 but it just ignores my attempts. I tried yafu factor(number) -B1ecm 1000000 and also setting the respective value in yafu.ini but it always starts with B1 = 11000

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2021-04-10, 12:58	#2
charybdis Apr 2020 2×3³×13 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.

2021-04-10, 20:45	#3
bur Aug 2020 796581e-4;32539e-3 503 Posts	Ok, thanks.