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
204859Factored
FactorDigitsBitsDate
39500912391031.9old
470286286914475122584973192685.32018-06-08 13:17:29
ECM
DigitsB1Curves
2550000280 / 280
30250000621 / 640
Estimated T-Level: 29.9 ⓘ
TF below 2^94 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-22Oliver Kruse577BADFD6A6295811013
Verified (Factored)2017-10-12kkmrkkblmbrbk577BADFD6A629581116754413
Verified2018-06-09Daniil Tsarkov8A3F6AE3AA13363927486453
Verified2018-06-14_p95holder_8A3F6AE3AA13363925730753
Verified2023-08-03USAFSS8A3F6AE3AA1336392521053
History
DateUserTypeResult
2023-08-03NumberwangCERT
PRP Certification
Proof certified good
2023-08-03USAFSSC-PRP
M204859/3950091239/47028628691447512258497319 : 8A3F6AE3AA133639
PRP proof power = 5
PRP: Verified
Proof certified good
2022-02-08Oliver KruseNF-PM1
B1=30000000, B2=10264076402580
2021-05-07Oliver KruseNF-PM1
B1=30000000, B2=3000000000
2018-06-14_p95holder_C-PRP
M204859/3950091239/47028628691447512258497319 : 8A3F6AE3AA133639
PRP: Verified
PRP without proof (small exponent)
2018-06-09Daniil TsarkovC-PRP
M204859/3950091239/47028628691447512258497319 : 8A3F6AE3AA133639
PRP: Verified
PRP without proof (small exponent)
2018-06-08TJAOIF-ECM
Factor: 47028628691447512258497319 / (ECM curve 36, B1=250000, B2=25000000)
2017-10-12kkmrkkblmbrbkC-PRP
M204859/3950091239 : 577BADFD6A629581
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M204859/3950091239 : 577BADFD6A629581
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M204859/3950091239 : 577BADFD6A629581
PRP without proof (not generated)