2 694 641 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
2239494221587833302000687	25	80.9	2020-11-24 13:32:36

ECM

Digits	B1	Curves
25	50000	68 / 280

Estimated T-Level: 21.2 ⓘ

TF below 2^65 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-06-29	Herb Savage	A96ADE111E7B2CA6	0
Verified (Factored)	1999-04-23	Aaron B	A96ADE111E7B2CA6	808971
Verified (Factored)	2018-07-29	kkmrkkblmbrbk	A96ADE111E7B2CA6	1536845

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-11-24	mrh	7E886875A0120D70	1	423863	5	3

History

Date	User	Type	Result
2020-11-24	Ben Delo	CERT	PRP Certification Proof certified good
2020-11-24	mrh	C-PRP	M2694641/2239494221587833302000687 : 7E886875A0120D70 PRP proof power = 7 PRP: Verified Proof certified good
2020-11-24	daveward2005	F-ECM	Factor: 2239494221587833302000687 / (ECM curve 5, B1=50000, B2=5000000, Sigma=3968785025155812)
2019-03-18	TJAOI	NF	no factor from 2^67 to 2^68
2018-08-12	mikr	NF-PM1	B1=8000000, B2=250000000, E=12
2018-07-29	kkmrkkblmbrbk	C-LL	A96ADE111E7B2CA6
2018-07-17	Joss	NF-PM1	B1=600000, B2=6000000, E=6
2017-09-15	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-01-27	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
2012-05-02	markr	NF	no factor from 2^61 to 2^62
2011-03-05	James Heinrich	NF-PM1	B1=300000, B2=8000000, E=12
2011-01-15	Joss	NF-PM1	B1=50000
2010-12-26	Joss	NF-PM1	B1=30000
2010-12-22	Joss	NF-PM1	B1=20000
2009-01-30	Sturle Sunde	NF	no factor from 2^60 to 2^61