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
1996223Factored
FactorDigitsBitsDate
3992447721.9old
2777664455591238.02008-07-15 07:49:07
5400701477591239.02008-07-15 07:49:07
1001409939111831546.52014-02-13 14:49:28
868487408798774861780892376.22021-03-21 18:25:15
109541420198734247931492312683.22022-10-03 11:10:33
ECM
DigitsB1Curves
2550000280 / 280
3025000058 / 640
Estimated T-Level: 25.5 ⓘ
TF below 2^80 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-10-05Oliver Kruse74E76F5E02D447361013
Verified (Factored)2017-11-22kkmrkkblmbrbk74E76F5E02D44736414581513
Verified (Factored)2017-11-22Oliver Kruse74E76F5E02D44736439095113
Verified (Factored)2021-03-22Luigi Morelli5AEA63BB4D8356B65111156253
Verified2022-10-04LordJulius5AEA63BB4D8356B6692782053
History
DateUserTypeResult
2022-10-04curtiscCERT
PRP Certification
Proof certified good
2022-10-04LordJuliusC-PRP
M1996223/3992447/277766445559/540070147759/100140993911183/86848740879877486178089/10954142019873424793149231 : 5AEA63BB4D8356B6
PRP proof power = 7
PRP: Verified
Proof certified good
2022-10-03TJAOIF-ECM
Factor: 10954142019873424793149231 / (ECM curve 181, B1=50000, B2=7500000)
2022-08-15USAFSSNF-PM1
B1=132000, B2=134381520
2021-03-22Ben DeloCERT
PRP Certification
Proof certified good
2021-03-22Luigi MorelliC-PRP
M1996223/3992447/277766445559/540070147759/100140993911183/86848740879877486178089 : 5AEA63BB4D8356B6
PRP proof power = 7
PRP: Verified (Factored)
Proof certified good
2021-03-21_p95holder_F-ECM
Factor: 86848740879877486178089 / (ECM curve 1, B1=50000, B2=5000000)
2017-11-22Oliver KruseC-PRP
M1996223/3992447/277766445559/540070147759/100140993911183 : 74E76F5E02D44736
PRP: Verified (Factored)
PRP without proof (not generated)
2017-11-22kkmrkkblmbrbkC-PRP
M1996223/100140993911183/277766445559/3992447/540070147759 : 74E76F5E02D44736
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1996223/3992447/277766445559/540070147759/100140993911183 : 74E76F5E02D44736
PRP: Verified (Factored)
PRP without proof (not generated)
2014-02-13TJAOIF
Factor: 100140993911183
2008-07-15J FeitsmaF
Factor: 540070147759
2008-07-15J FeitsmaF
Factor: 277766445559