2 568 187 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
2377303449170638475951	22	71.0	2021-01-03 12:27:59

ECM

Digits	B1	Curves
25	50000	92 / 280

Estimated T-Level: 21.6 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Brian Schmid	07824040DD0E78EA	0
Verified (Factored)		Kevin Land	07824040DD0E78EA	0
Verified (Factored)	1999-05-23	Morten Ringvold	07824040DD0E78EA	2038287

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-01-09	Niels_Mache_Nextcloud	0DED313B595D6599	1	2069953	5	3

History

Date	User	Type	Result
2021-01-09	curtisc	CERT	PRP Certification Proof certified good
2021-01-09	Niels_Mache_Nextcloud	C-PRP	M2568187/2377303449170638475951 : 0DED313B595D6599 PRP proof power = 7 PRP: Verified Proof certified good
2021-01-03	Keysarecool	F-ECM	Factor: 2377303449170638475951 / (ECM curve 7, B1=50000, B2=5000000, Sigma=626740164603659)
2019-05-06	TJAOI	NF	no factor from 2^67 to 2^68
2017-08-13	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-05-30	mikr	NF-PM1	B1=3200000, B2=112000000, E=12
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2015-11-08	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-23	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-23	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-17	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-04-16	James Heinrich	NF-PM1	B1=175000, B2=4112500, E=6
2011-01-10	Joss	NF-PM1	B1=50000
2011-01-03	Joss	NF-PM1	B1=30000
2010-12-21	Joss	NF-PM1	B1=20000
2009-01-28	Sturle Sunde	NF	no factor from 2^60 to 2^61