Marin Mersenne 2^P-1
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MnStatusDetails
288317Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
390513465340559670339881032685.02011-11-24 15:46:58
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000214 / 1566
Estimated T-Level: 30.7
TF below 2^97 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski43F20
Verified (Factored)Unknown43F20
Verified (Factored)Guillermo Ballester Valor8B82D7883C3743F20
Verified (Factored)Brian J. Beesley8B82D7883C3743F20
Verified (Factored)Eivind Triel8B82D7883C3743F2260750
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-24Oliver KruseE0469A419A0EB8AB1013
Verified2017-10-12Oliver KruseE0469A419A0EB8AB127353413
Verified2017-11-06kkmrkkblmbrbkE0469A419A0EB8AB114827213
Verified2020-04-17Oliver Kruse708B6061D54F4D2A120130153
Verified2024-08-13kkmrkkblmbrbk708B6061D54F4D2A11969153
History
DateUserTypeResult
2024-11-15yuriy_5-1NF-PM1
B1=26525164, B2=6490139666010
2024-08-14Luke DurantCERT
PRP Certification
Proof certified good
2024-08-13kkmrkkblmbrbkC-PRP
M288317/39051346534055967033988103 : 708B6061D54F4D2A
PRP proof power = 5
PRP: Verified
Proof certified good
2023-02-17USAFSSNF-PM1
B1=4000000, B2=19828707990
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2020-04-17Oliver KruseC-PRP
M288317/39051346534055967033988103 : 708B6061D54F4D2A
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M288317/39051346534055967033988103 : E0469A419A0EB8AB
PRP: Verified
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M288317/39051346534055967033988103 : E0469A419A0EB8AB
PRP: Verified
PRP without proof (small exponent)
2017-09-24Oliver KruseC-PRP
M288317/39051346534055967033988103 : E0469A419A0EB8AB
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M288317/39051346534055967033988103 : E0469A419A0EB8AB
PRP without proof (not generated)
2011-11-24Sturle SundeF-ECM
Factor: 39051346534055967033988103
2011-07-26JossNF-PM1
B1=1666334
2009-01-25Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-02Sturle SundeNF
no factor from 2^58 to 2^59