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
250073Factored
FactorDigitsBitsDate
21861381671031.0old
35686764247119240417056409372891.52021-02-14 22:44:59
ECM
DigitsB1Curves
2550000280 / 280
30250000452 / 640
Estimated T-Level: 28.5 ⓘ
TF below 2^90 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-22Oliver Kruse262B96A8C408C1281013
Verified (Factored)2017-10-12Oliver Kruse262B96A8C408C128120172713
Verified (Factored)2017-11-06kkmrkkblmbrbk262B96A8C408C12816814513
Verified (Factored)2020-04-17Oliver Kruse3117951D121FEC04119483853
Verified2021-02-15MarkS3117951D121FEC04216104753
History
DateUserTypeResult
2022-04-19Oliver KruseNF-PM1
B1=30000000, B2=10120247026890
2021-08-16Oliver KruseNF-PM1
B1=30000000, B2=3000000000, E=24
2021-05-27gLaussNF-PP1
Start=2/7, B1=7500000, B2=592500000
2021-05-27gLaussNF-PM1
B1=15000000, B2=1290000000
2021-02-15tonywCERT
PRP Certification
Proof certified good
2021-02-15MarkSC-PRP
M250073/2186138167/3568676424711924041705640937 : 3117951D121FEC04
PRP proof power = 5
PRP: Verified
Proof certified good
2021-02-14mnd9F-ECM
Factor: 3568676424711924041705640937 / (ECM curve 3, B1=250000, B2=25000000, Sigma=2377278521975010)
2020-04-17Oliver KruseC-PRP
M250073/2186138167 : 3117951D121FEC04
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M250073/2186138167 : 262B96A8C408C128
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M250073/2186138167 : 262B96A8C408C128
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M250073/2186138167 : 262B96A8C408C128
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M250073/2186138167 : 262B96A8C408C128
PRP without proof (not generated)