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

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MnStatusDetails
1632509Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
487635891104277634258792375.42018-01-03 12:33:46
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Len Ruth9030E74965E286240
Verified (Factored)1998-11-07Angus Cameron9030E74965E286241231134
Verified (Factored)2015-07-19MadPoo9030E74965E2862476512
PRP
StatusDateUserResidueShiftTypeBase
Verified (Factored)2025-09-02Kriesel47D56672BADD3F1D013
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2018-01-03ATH47D56672BADD3F1D128826353
Verified2018-01-04kkmrkkblmbrbk47D56672BADD3F1D1141871853
Verified2018-01-04BloodERazor47D56672BADD3F1D115441453
History
DateUserTypeResult
2025-09-03Carlos PinhoCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-02KrieselC-PRP
47D56672BADD3F1D
PRP proof power = 6
PRP: Verified (Factored)
Proof certified good
2018-01-04BloodERazorC-PRP
M1632509/48763589110427763425879 : 47D56672BADD3F1D
PRP: Verified
PRP without proof (not generated)
2018-01-04kkmrkkblmbrbkC-PRP
M1632509/48763589110427763425879 : 47D56672BADD3F1D
PRP: Verified
PRP without proof (not generated)
2018-01-03ATHC-PRP
M1632509/48763589110427763425879 : 47D56672BADD3F1D
PRP: Verified
PRP without proof (not generated)
2018-01-03VictordeHollanderF-ECM
Factor: 48763589110427763425879 / (ECM curve 34, B1=50000, B2=5000000)
2017-11-10TJAOINF
no factor from 2^66 to 2^67
2017-09-18JossNF-PM1
B1=2400000, B2=24000000, E=12
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-10-11ramgeisNF
no factor from 2^65 to 2^66
2015-07-19MadPooC-LL
9030E74965E28624
2015-05-03monstNF
no factor from 2^64 to 2^65
2015-05-02omylistNF
no factor from 2^63 to 2^64
2012-03-01AxonNF-PM1
B1=1000000, B2=20000000, E=12
2012-03-01AxonNF-PM1
B1=1000000, B2=8000000, E=12
2012-02-29AxonNF-PM1
B1=1000000
2012-02-29AxonNF-PM1
B1=900000
2012-02-29AxonNF-PM1
B1=800000
2012-02-29AxonNF-PM1
B1=700000
2012-02-29AxonNF-PM1
B1=600000
2012-02-29AxonNF-PM1
B1=500000
2012-02-29AxonNF-PM1
B1=400000
2012-02-29AxonNF-PM1
B1=300000
2012-02-29AxonNF-PM1
B1=200000
2012-02-29AxonNF-PM1
B1=100000
2010-09-13GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-30Architects CubedNF
no factor from 2^60 to 2^61