Thread: ECM factoring
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Old 2006-10-15, 15:26   #4
Mystwalker's Avatar
Jul 2004
Potsdam, Germany

3·277 Posts

Just entered 151026*5^110-1 into msieve:

prp41 factor: 19094485960440215874363137033854288407797
prp42 factor: 609318305575000443064617648157915891177117

So a relatively hard composite for ECM.

If you want, you can provide a list of the smallest composites without factors (maybe up to 100 digits).
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