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

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Exponent Range:





MnDetails
4217
Composite, with 4 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
2184407721.1old
13984246731030.4old
20258105653151681894765992580.7old
10042623950431881030190269636013208157279142136.22018-05-04 11:12:10
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000020599 / 40830
Estimated T-Level: 52.5 ⓘ
TF below 2^169 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
No proof (small exponent)
2017-09-21Oliver KruseE5D9C6FED77FD1AA3013
Factored
No proof (small exponent)
2017-10-02kkmrkkblmbrbkE5D9C6FED77FD1AA3013
Factored
No proof (small exponent)
2017-12-07ATHE5D9C6FED77FD1AA310113
Factored
No proof (small exponent)
2018-05-05BloodIceFA4FD68FA8CEAA121013
Verified
No proof (small exponent)
2018-05-06Oliver KruseD2FB04379CAF0E8B4102353
Verified
No proof (small exponent)
2018-05-06ATHD2FB04379CAF0E8B4161553
Verified
No proof (small exponent)
2020-04-17Oliver KruseD2FB04379CAF0E8B4123953
History
DateUserTypeResult
2025-05-12masserNF-PP1Start=114/31, B1=2600000000, B2=2597400000000
2023-05-18-anonymous-NF-PM1B1=76000000000, B2=757396254223799190
2021-12-14ANONYMOUSNF-PM1B1=101101101, B2=239432550687330
2021-12-14Oliver KruseNF-PM1B1=1000000000, B2=276529213680720
2021-12-14ANONYMOUSNF-PM1B1=1000000, B2=77502269044200
2020-04-17Oliver KruseC-PRPM4217/2184407/1398424673/2025810565315168189476599/100426239504318810301902696360132081572791 : D2FB04379CAF0E8B
2018-05-06ATHC-PRPM4217/2184407/1398424673/2025810565315168189476599/100426239504318810301902696360132081572791 : D2FB04379CAF0E8B
2018-05-06Oliver KruseC-PRPM4217/2184407/1398424673/2025810565315168189476599/100426239504318810301902696360132081572791 : D2FB04379CAF0E8B
2018-05-05BloodIceC-PRPM4217/known_factors : FA4FD68FA8CEAA12
2018-05-04BloodIceF-ECMFactor: 100426239504318810301902696360132081572791
2017-12-07ATHC-PRPM4217/2184407/1398424673/2025810565315168189476599 : E5D9C6FED77FD1AA
2017-10-02kkmrkkblmbrbkC-PRPM4217/2184407/1398424673/2025810565315168189476599 : E5D9C6FED77FD1AA
2017-09-21Oliver KruseC-PRPM4217/known_factors : E5D9C6FED77FD1AA
2009-10-25Carsten KossendeyFFactor: 3054728644673911