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

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MnStatusDetails
17027Composite, with 5 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
442703618.8old
96032281826.52008-08-26 19:58:49
5477256257291239.02008-08-26 19:58:49
3506228735500091548.32008-08-26 19:58:49
5713080137716809257608632478.92008-08-29 02:24:38
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001573 / 9201
Estimated T-Level: 40.9
TF below 2^131 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse9BA4799ECE41640E5013
Verified2017-10-02kkmrkkblmbrbk9BA4799ECE41640E5013
Verified2017-12-07ATH9BA4799ECE41640E5973513
Verified2020-04-17Oliver Kruse2E1001433D8A50175143453
Verified2024-07-01kkmrkkblmbrbk2E1001433D8A50175782353
P-1 factors
DateFactorB1B2
2024-12-10571308013771680925760863100000000000120420153999155008
History
DateUserTypeResult
2025-02-02masserNF-PP1
Start=2/7, B1=265000000, B2=264735000000
2025-01-29masserNF-PP1
Start=194/43, B1=265000000, B2=264735000000
2025-01-10masserNF-PP1
Start=6/5, B1=265000000, B2=264735000000
2024-12-10-Anonymous-F-PM1
Factor: 571308013771680925760863 / (P-1, B1=100000000000, B2=120420153999155010)
2024-07-01kkmrkkblmbrbkC-PRP
M17027/350622873550009/442703/547725625729/571308013771680925760863/96032281 : 2E1001433D8A5017
PRP: Verified
PRP without proof (small exponent)
2023-05-23JacobZNF-PM1
B1=6300000000, B2=17613225783603450
2021-08-27Seth_TrNF-PM1
B1=400000000
2020-04-17Oliver KruseC-PRP
M17027/442703/96032281/547725625729/350622873550009/571308013771680925760863 : 2E1001433D8A5017
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M17027/442703/96032281/547725625729/350622873550009/571308013771680925760863 : 9BA4799ECE41640E
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M17027/442703/96032281/547725625729/350622873550009/571308013771680925760863 : 9BA4799ECE41640E
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M17027/known_factors : 9BA4799ECE41640E
PRP: Verified
PRP without proof (not generated)
2008-08-29-Anonymous-F-ECM
Factor: 571308013771680925760863
2008-08-26-Anonymous-F-PM1
Factor: 350622873550009
2008-08-26-Anonymous-F
Factor: 547725625729
2008-08-26-Anonymous-F
Factor: 96032281