4 087 403 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
5608162665617276215543	22	72.2	2016-04-04 08:37:17

ECM

Digits	B1	Curves
25	50000	9 / 280

Estimated T-Level: 20.2 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Rob Harger	0F74D596767BE71C	0
Verified (Factored)	1999-10-07	Kent Lee	0F74D596767BE71C	204962

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-11-13	kkmrkkblmbrbk	107B6F9D0169BB40	1	2355772	5	3
Verified	2018-01-11	Oliver Kruse	107B6F9D0169BB40	1	726041	5	3

History

Date	User	Type	Result
2023-04-11	USAFSS	NF-PM1	B1=224000, B2=119776800
2018-01-11	Oliver Kruse	C-PRP	M4087403/5608162665617276215543 : 107B6F9D0169BB40 PRP: Verified PRP without proof (not generated)
2017-11-13	kkmrkkblmbrbk	C-PRP	M4087403/5608162665617276215543 : 107B6F9D0169BB40 PRP: Verified PRP without proof (not generated)
2016-04-04	Sid & Andy	F-ECM	Factor: 5608162665617276215543 / (ECM curve 3, B1=50000, B2=5000000)
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-05-23	snme2pm1	NF	no factor from 2^65 to 2^66
2013-11-01	David Campeau	NF	no factor from 2^64 to 2^65
2013-08-29	Jayder	NF	no factor from 2^63 to 2^64
2013-07-22	Squeeky_Squirrel	NF-PM1	B1=120000, B2=2340000, E=6
2011-07-29	USAFSS	NF-PM1	B1=40000, B2=580000
2011-07-01	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-11-09	Grant McCracken	NF	no factor from 2^61 to 2^62
2009-07-21	Carsten Kossendey	NF-PM1	B1=20000, B2=300000