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Old 2022-01-11, 22:46   #6
mathwiz
 
Mar 2019

277 Posts
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CADO-NFS can factor a 155 digit / 512 bit number in a few days, and that's only on a dual 8 core system: https://cado-nfs.gitlabpages.inria.fr/

If you have a 64-core machine (or a few) you can probably get that down to under a day.
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