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
200597Factored
FactorDigitsBitsDate
2808359721.4old
4884087612731238.82008-07-21 09:13:41
1247398386839740336731925047193096.72021-01-26 01:12:22
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000160 / 1566
Estimated T-Level: 30.5 ⓘ
TF below 2^96 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-22Oliver Kruse9D21BA9AE3AB96472013
Verified (Factored)2017-10-12kkmrkkblmbrbk9D21BA9AE3AB9647213052813
Verified (Factored)2020-04-17Oliver Kruse09677723CEE2C742211906753
Verified2021-01-26MarkS09677723CEE2C74234275753
Verified2023-08-03USAFSS09677723CEE2C742315259853
History
DateUserTypeResult
2023-08-03LOBESCERT
PRP Certification
Proof certified good
2023-08-03USAFSSC-PRP
M200597/2808359/488408761273/124739838683974033673192504719 : 09677723CEE2C742
PRP proof power = 5
PRP: Verified
Proof certified good
2021-02-27ViliamFNF-PM1
B1=50000000, B2=8050000000
2021-01-26mandelbrot31415CERT
PRP Certification
Proof certified good
2021-01-26MarkSC-PRP
M200597/2808359/488408761273/124739838683974033673192504719 : 09677723CEE2C742
PRP proof power = 5
PRP: Verified
Proof certified good
2021-01-26PoaoF-ECM
Factor: 124739838683974033673192504719 / (ECM curve 7, B1=250000, B2=25000000, Sigma=5899865862847438)
2020-04-17Oliver KruseC-PRP
M200597/2808359/488408761273 : 09677723CEE2C742
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M200597/2808359/488408761273 : 9D21BA9AE3AB9647
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M200597/2808359/488408761273 : 9D21BA9AE3AB9647
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M200597/2808359/488408761273 : 9D21BA9AE3AB9647
PRP without proof (not generated)
2008-07-21J FeitsmaF
Factor: 488408761273