2 062 391 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
625429335812427610337	21	69.1	2015-07-16 14:49:49

ECM

Digits	B1	Curves
25	50000	108 / 280

Estimated T-Level: 21.9 ⓘ

TF below 2^68 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Francois E Jaccard	B3F819ECA033F275	0
Verified (Factored)	1999-09-14	Alex Swain	B3F819ECA033F275	788635

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-06	Oliver Kruse	798AD2A001D3B45C	1	0	1	3
Verified	2017-11-16	kkmrkkblmbrbk	798AD2A001D3B45C	1	1930357	1	3

History

Date	User	Type	Result
2022-03-09	LordJulius	NF	no factor from 2^1 to 2^60
2017-11-16	kkmrkkblmbrbk	C-PRP	M2062391/625429335812427610337 : 798AD2A001D3B45C PRP: Verified PRP without proof (not generated)
2017-10-06	Oliver Kruse	C-PRP	M2062391/625429335812427610337 : 798AD2A001D3B45C PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2015-07-16	guru	F-ECM	Factor: 625429335812427610337 / (ECM curve 2, B1=50000, B2=5000000)
2015-03-28	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-28	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-28	Joss	NF-PM1	B1=166121
2013-09-01	ramgeis	NF	no factor from 2^62 to 2^63
2012-03-13	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-21	James Heinrich	NF-PM1	B1=135000, B2=2902500, E=6
2011-01-06	Joss	NF-PM1	B1=50000
2010-12-26	Joss	NF-PM1	B1=30000
2009-06-22	USAFSS	NF-PM1	B1=20000, B2=260000
2009-01-02	Sturle Sunde	NF	no factor from 2^60 to 2^61