Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
Fermat F21Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
44852964229131342.01963
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000002430 / 16550
Estimated T-Level: 45.7
TF below 2^147 is very unlikely to find new factors due to ECM effort.
2 near-duplicate ECM records are not shown in History (below).
Near-duplicate in this case is when something like "1 curve completed" is reported multiple times by the same user on the same day.
Please try to do 10s or 100s of curves at once instead of reporting them one-by-one.
History
DateUserTypeResult
2021-09-04H MichaelsonNF-PP1
Start=2/7, B1=1000000, B2=100000000
2021-04-30ATHNF-PP1
Start=6/5, B1=100000000, B2=5000000000
2021-04-23ATHNF-PP1
Start=2/7, B1=5000000, B2=500000000
2009-01-06Architects CubedF-ECM
Factor: 4485296422913
2008-12-18Architects CubedF-ECM
Factor: 4485296422913
2008-12-16Architects CubedF-ECM
Factor: 4485296422913
2008-12-02arnaudF-ECM
Factor: 4485296422913
2008-11-27Andrew LemyakinF-ECM
Factor: 4485296422913
2008-11-26arnaudF-ECM
Factor: 4485296422913
2008-11-24arnaudF-ECM
Factor: 4485296422913
2008-11-17Andrew LemyakinF-ECM
Factor: 4485296422913
2008-11-13arnaudF-ECM
Factor: 4485296422913
2008-11-07Lars FrickeF-ECM
Factor: 4485296422913
2008-11-07arnaudF-ECM
Factor: 4485296422913
2008-11-05arnaudF-ECM
Factor: 4485296422913
2008-11-03arnaudF-ECM
Factor: 4485296422913
2008-10-30arnaudF-ECM
Factor: 4485296422913
2008-10-29arnaudF-ECM
Factor: 4485296422913
2008-10-22arnaudF-ECM
Factor: 4485296422913
2008-10-20arnaudF-ECM
Factor: 4485296422913
2008-10-16arnaudF-ECM
Factor: 4485296422913
2008-10-14arnaudF-ECM
Factor: 4485296422913
2008-10-11arnaudF-ECM
Factor: 4485296422913
2008-10-10arnaudF-ECM
Factor: 4485296422913
2008-10-03arnaudF-ECM
Factor: 4485296422913
2008-10-01arnaudF-ECM
Factor: 4485296422913
2008-09-26arnaudF-ECM
Factor: 4485296422913
2008-09-24arnaudF-ECM
Factor: 4485296422913
2008-09-23arnaudF-ECM
Factor: 4485296422913
2008-09-22arnaudF-ECM
Factor: 4485296422913
2008-09-18arnaudF-ECM
Factor: 4485296422913
2008-09-17arnaudF-ECM
Factor: 4485296422913
2008-09-11arnaudF-ECM
Factor: 4485296422913
2008-09-09arnaudF-ECM
Factor: 4485296422913
2008-09-03arnaudF-ECM
Factor: 4485296422913
2008-09-02arnaudF-ECM
Factor: 4485296422913
2008-08-29arnaudF-ECM
Factor: 4485296422913
2008-08-28arnaudF-ECM
Factor: 4485296422913
2008-08-25arnaudF-ECM
Factor: 4485296422913
2008-07-31arnaudF-ECM
Factor: 4485296422913
2008-07-30arnaudF-ECM
Factor: 4485296422913
2008-07-28arnaudF-ECM
Factor: 4485296422913
2008-07-24arnaudF-ECM
Factor: 4485296422913
2008-07-17arnaudF-ECM
Factor: 4485296422913
2008-07-11arnaudF-ECM
Factor: 4485296422913
2008-07-10arnaudF-ECM
Factor: 4485296422913
2008-07-09arnaudF-ECM
Factor: 4485296422913
2008-07-07arnaudF-ECM
Factor: 4485296422913
2008-07-03arnaudF-ECM
Factor: 4485296422913
2008-06-26arnaudF-ECM
Factor: 4485296422913
2008-06-25arnaudF-ECM
Factor: 4485296422913
2008-06-19arnaudF-ECM
Factor: 4485296422913
2008-06-18arnaudF-ECM
Factor: 4485296422913
2008-06-17arnaudF-ECM
Factor: 4485296422913
2008-04-25arnaudF-ECM
Factor: 4485296422913
2008-04-23arnaudF-ECM
Factor: 4485296422913
2008-04-20arnaudF-ECM
Factor: 4485296422913
2008-04-17arnaudF-ECM
Factor: 4485296422913
2008-04-16arnaudF-ECM
Factor: 4485296422913
2008-04-15arnaudF-ECM
Factor: 4485296422913