Minor mods to Jason Papadopoulos' factorization powerhouse msieve.
msieve can be found at https://github.com/MersenneForum/msieve.
The mods herein primarily concern two areas of interest:
- Allow somewhat larger numbers to be factorized.
- Allow finer control over the ECM phase of factorization.
Note that the modifications recorded in this project have purposely not been submitted to the msieve project. The mods are incomplete and concern behaviors that Jason has specifically said he's not interested in providing. His interests lie elsewhere, which is totally fine.