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

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MnStatusDetails
904663Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
21428446293772853031960.92015-06-03 11:17:52
33876961154045930711961.6old
152265213947540384269417639863819134110.22024-08-23 01:18:53
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000169 / 1566
Estimated T-Level: 30.5
TF below 2^96 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-28Oliver Kruse857E54DB9AD635D12013
Verified (Factored)2017-10-14Oliver Kruse857E54DB9AD635D1253473513
Verified (Factored)2017-12-20ATH857E54DB9AD635D1235565413
Verified (Factored)2020-04-23Oliver KruseAF146FC3520AF241280611753
Verified2024-08-24Naegi MakotoAF146FC3520AF241381858953
P-1 factors
DateFactorB1B2
2015-06-032142844629377285303100000030000000
2024-08-231522652139475403842694176398638191100000000020888529501840
History
DateUserTypeResult
2024-08-24S147127CERT
PRP Certification
Proof certified good
2024-08-24Naegi MakotoC-PRP
M904663/2142844629377285303/3387696115404593071/1522652139475403842694176398638191 : AF146FC3520AF241
PRP proof power = 6
PRP: Verified
Proof certified good
2024-08-23axnF-PM1
Factor: 1522652139475403842694176398638191 / (P-1, B1=1000000000, B2=20888529501840)
2020-04-23Oliver KruseC-PRP
M904663/2142844629377285303/3387696115404593071 : AF146FC3520AF241
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-12-20ATHC-PRP
M904663/2142844629377285303/3387696115404593071 : 857E54DB9AD635D1
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-10-14Oliver KruseC-PRP
M904663/3387696115404593071/2142844629377285303 : 857E54DB9AD635D1
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-09-28Oliver KruseC-PRP
M904663/3387696115404593071/2142844629377285303 : 857E54DB9AD635D1
PRP: Verified (Factored)
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=200000, B2=5000000, E=6
2015-06-03alpertronF-PM1
Factor: 2142844629377285303 / (P-1, B1=1000000, B2=30000000, E=12)