2 426 119 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
1038436116575155058470769	25	79.8	2020-09-04 18:37:58

ECM

Digits	B1	Curves
25	50000	77 / 280

Estimated T-Level: 21.4 ⓘ

TF below 2^66 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Bad		Gabor Koranyi	F7532C322558CAD6	0
Verified (Factored)	1999-03-15	Bruce Mitchell	E893C6029C6D50F4	1746263
Verified (Factored)	1999-05-23	Will Dinielli	E893C6029C6D50F4	2022350
Verified (Factored)	2018-05-21	kkmrkkblmbrbk	E893C6029C6D50F4	688428

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-09-06	benthomas	EF3079BD61D85CD7	1	777560	5	3

History

Date	User	Type	Result
2020-09-06	ky0uraku	CERT	PRP Certification Proof certified good
2020-09-06	benthomas	C-PRP	M2426119/1038436116575155058470769 : EF3079BD61D85CD7 PRP proof power = 7 PRP: Verified Proof certified good
2020-09-04	GAN	F-ECM	Factor: 1038436116575155058470769 / (ECM curve 2, B1=50000, B2=5000000)
2019-04-22	TJAOI	NF	no factor from 2^67 to 2^68
2018-05-21	kkmrkkblmbrbk	C-LL	E893C6029C6D50F4
2017-07-05	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2015-10-23	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-27	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-27	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-04-23	mikr	NF-PM1	B1=1986400, B2=69524000, E=12
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-05	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2010-12-18	markr	NF-PM1	B1=95000, B2=1923750, E=6
2010-11-17	Joss	NF-PM1	B1=20000
2010-11-10	Joss	NF-PM1	B1=15000
2009-01-14	Sturle Sunde	NF	no factor from 2^60 to 2^61