2 882 461 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
283227603740737283754199	24	77.9	2016-09-12 12:33:33

ECM

Digits	B1	Curves
25	50000	13 / 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)		John Lloyd	497C057B02FC6EDB	0
Verified (Factored)	1999-05-16	Ashley Hatch	497C057B02FC6EDB	451837

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-23	Oliver Kruse	25ED8CDD29020DFA	1	334505	5	3
Verified	2017-12-08	kkmrkkblmbrbk	25ED8CDD29020DFA	1	686012	5	3

History

Date	User	Type	Result
2023-04-16	Kevin_9611	NF-PM1	B1=240000, B2=279852300
2017-12-08	kkmrkkblmbrbk	C-PRP	M2882461/283227603740737283754199 : 25ED8CDD29020DFA PRP: Verified PRP without proof (not generated)
2017-10-23	Oliver Kruse	C-PRP	M2882461/283227603740737283754199 : 25ED8CDD29020DFA PRP: Verified PRP without proof (not generated)
2016-09-12	bam	F-ECM	Factor: 283227603740737283754199 / (ECM curve 1, B1=50000, B2=5000000)
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2015-11-11	omylist	NF	no factor from 2^65 to 2^66
2015-04-21	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-21	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-10	dbaugh	NF	no factor from 2^62 to 2^63
2012-01-21	Grant McCracken	NF	no factor from 2^61 to 2^62
2011-02-25	Carsten Kossendey	NF-PM1	B1=200000, B2=5000000, E=6
2010-12-24	Joss	NF-PM1	B1=20000
2009-07-03	Carsten Kossendey	NF-PM1	B1=15000, B2=161250
2009-02-13	Sturle Sunde	NF	no factor from 2^60 to 2^61