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

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MnStatusDetails
151771Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
28229407824.8old
69336255094006110059000332582.52015-04-17 10:31:21
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000179 / 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
Verified2017-09-22Oliver Kruse88F290CB5921E3282013
Verified2017-10-11kkmrkkblmbrbk88F290CB5921E328212775313
Verified2020-04-17Oliver KruseDB87D1349D884F4025991553
Verified2024-02-03Wentao HuangDB87D1349D884F4024620053
History
DateUserTypeResult
2024-02-03slaurCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M151771/28229407/6933625509400611005900033 : DB87D1349D884F40
PRP proof power = 5
PRP: Verified
Proof certified good
2020-04-17Oliver KruseC-PRP
M151771/28229407/6933625509400611005900033 : DB87D1349D884F40
PRP: Verified
PRP without proof (small exponent)
2017-10-11kkmrkkblmbrbkC-PRP
M151771/28229407/6933625509400611005900033 : 88F290CB5921E328
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M151771/28229407/6933625509400611005900033 : 88F290CB5921E328
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M151771/28229407/6933625509400611005900033 : 88F290CB5921E328
PRP without proof (not generated)
2016-11-18kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2015-04-17TJAOIF-ECM
Factor: 6933625509400611005900033 / (ECM curve 87, B1=50000, B2=5000000)