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

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MnStatusDetails
16725883Factored
FactorDigitsBitsDate
249381457221898251064910332684.42017-05-30 15:10:51
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0
TF below 2^61 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2003-04-19Mike BumbaughDAD864926F14C58D9344325
Verified (Factored)2006-03-28Philip OlsonDAD864926F14C58D3742754
History
DateUserTypeResult
2024-03-01nordiNF-PM1
B1=500000
2017-05-30ATHF-ECM
Factor: 24938145722189825106491033 / (ECM curve 1, B1=50000, B2=5000000)
2016-03-15Mark RoseNF
no factor from 2^65 to 2^66
2014-09-16NesowaNF
no factor from 2^66 to 2^67