Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
Fermat F23Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
167772161927.31878
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001338 / 9201
Estimated T-Level: 40.7
TF below 2^130 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
2021-09-05H MichaelsonNF-PP1
Start=2/7, B1=1000000, B2=100000000
2021-04-29ATHNF-PP1
Start=6/5, B1=20000000, B2=2000000000
2021-04-23ATHNF-PP1
Start=2/7, B1=5000000, B2=500000000
2008-12-27_^MvIiIaX^_F-ECM
Factor: 167772161
2008-12-08Jiri LeblF-ECM
Factor: 167772161
2008-12-02S36049F-ECM
Factor: 167772161
2008-12-01S36049F-ECM
Factor: 167772161
2008-11-29S36049F-ECM
Factor: 167772161
2008-11-28Jiri LeblF-ECM
Factor: 167772161
2008-11-28S36049F-ECM
Factor: 167772161
2008-11-27S36049F-ECM
Factor: 167772161
2008-11-26S36049F-ECM
Factor: 167772161
2008-11-25S36049F-ECM
Factor: 167772161
2008-11-18The TreachersF-ECM
Factor: 167772161
2008-11-16The TreachersF-ECM
Factor: 167772161
2008-11-06S530729F-ECM
Factor: 167772161
2008-11-04S530729F-ECM
Factor: 167772161
2008-11-02S530729F-ECM
Factor: 167772161
2008-10-31S530729F-ECM
Factor: 167772161