Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:





MnDetails
2843
Composite, with 5 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
142151617.1old
187639617.5old
676467460648189501286579551490331102.4old
172787173529235579039012520439430027490340130.32008-12-30 15:28:01
13165183745406644285373511980884298161231942136.62009-02-11 20:15:38
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000040830 / 40830
6026000000018123 / 105362
Estimated T-Level: 55.9 ⓘ
TF below 2^181 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
No proof (small exponent)
2017-09-21Oliver KruseF5EFFBB7654C07165013
Verified
No proof (small exponent)
2017-10-02kkmrkkblmbrbkF5EFFBB7654C07165013
Verified
No proof (small exponent)
2017-12-07ATHF5EFFBB7654C07165125013
Verified
No proof (small exponent)
2020-04-17Oliver Kruse1583180CE236C957594253
Verified
No proof (small exponent)
2024-02-03Wentao Huang1583180CE236C9575230253
History
DateUserTypeResult
2025-04-11masserNF-PP1Start=163/17, B1=4300000000, B2=4295700000000
2024-06-17masserNF-PM1B1=100000000000, B2=113422011560577720
2024-02-03Wentao HuangC-PRPM2843/142151/187639/6764674606481895012865795514903/1727871735292355790390125204394300274903/131651837454066442853735119808842981612319 : 1583180CE236C957
2021-07-07ViliamFNF-PM1B1=1000000000, B2=191000000000
2020-04-17Oliver KruseC-PRPM2843/142151/187639/6764674606481895012865795514903/1727871735292355790390125204394300274903/131651837454066442853735119808842981612319 : 1583180CE236C957
2017-12-07ATHC-PRPM2843/142151/187639/6764674606481895012865795514903/1727871735292355790390125204394300274903/131651837454066442853735119808842981612319 : F5EFFBB7654C0716
2017-10-02kkmrkkblmbrbkC-PRPM2843/142151/187639/6764674606481895012865795514903/1727871735292355790390125204394300274903/131651837454066442853735119808842981612319 : F5EFFBB7654C0716
2017-09-21Oliver KruseC-PRPM2843/known_factors : F5EFFBB7654C0716
2009-02-11Matthias WurtingerF-ECMFactor: 131651837454066442853735119808842981612319
2008-12-30-anonymous-F-ECMFactor: 1727871735292355790390125204394300274903