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

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MnStatusDetails
200843Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
147740110811133.8old
2927666368645441271858.02014-07-28 13:44:14
1945385549290382124492167.42014-12-05 13:41:05
6298540492647220387313790277332732105.62019-12-13 16:41:42
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000190 / 1566
Estimated T-Level: 30.6
TF below 2^97 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-22Oliver Kruse7F550E1C5BCD8F8F3013
Verified (Factored)2017-10-12kkmrkkblmbrbk7F550E1C5BCD8F8F31083913
Verified2019-12-14Niels_Mache_NextcloudA11C3164A3CBE9DC48792453
Verified2019-12-16arnaudA11C3164A3CBE9DC49649453
Verified2023-08-03USAFSSA11C3164A3CBE9DC418005653
History
DateUserTypeResult
2023-08-03curtiscCERT
PRP Certification
Proof certified good
2023-08-03USAFSSC-PRP
M200843/14774011081/292766636864544127/194538554929038212449/62985404926472203873137902773327 : A11C3164A3CBE9DC
PRP proof power = 5
PRP: Verified
Proof certified good
2021-02-21ViliamFNF-PM1
B1=50000000, B2=8050000000
2019-12-16arnaudC-PRP
M200843/14774011081/292766636864544127/194538554929038212449/62985404926472203873137902773327 : A11C3164A3CBE9DC
PRP: Verified
PRP without proof (small exponent)
2019-12-14Niels_Mache_NextcloudC-PRP
M200843/14774011081/292766636864544127/194538554929038212449/62985404926472203873137902773327 : A11C3164A3CBE9DC
PRP: Verified
PRP without proof (small exponent)
2019-12-13Niels_Mache_NextcloudF-ECM
Factor: 62985404926472203873137902773327 / (ECM curve 2, B1=250000, B2=25000000, Sigma=6406024543540858)
2017-10-12kkmrkkblmbrbkC-PRP
M200843/14774011081/292766636864544127/194538554929038212449 : 7F550E1C5BCD8F8F
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M200843/known_factors : 7F550E1C5BCD8F8F
PRP without proof (not generated)
2014-12-05TJAOIF-ECM
Factor: 194538554929038212449
2014-07-28TJAOIF-ECM
Factor: 292766636864544127