2 538 659 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
2588998682141124015748293431	28	91.1	2011-04-03 23:37:01

ECM

Digits	B1	Curves
25	50000	133 / 280

Estimated T-Level: 22.4 ⓘ

TF below 2^69 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Marco Voerman	7F43DEF8BBBD434C	0
Verified (Factored)	1999-04-02	Michael Gove	7F43DEF8BBBD434C	1969140

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-14	Oliver Kruse	A8001D7CADB28E60	1	1745342	5	3
Verified	2017-12-01	kkmrkkblmbrbk	A8001D7CADB28E60	1	909520	5	3

History

Date	User	Type	Result
2022-03-11	LordJulius	NF	no factor from 2^1 to 2^60
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-12-01	kkmrkkblmbrbk	C-PRP	M2538659/2588998682141124015748293431 : A8001D7CADB28E60 PRP: Verified PRP without proof (not generated)
2017-10-14	Oliver Kruse	C-PRP	M2538659/2588998682141124015748293431 : A8001D7CADB28E60 PRP: Verified PRP without proof (not generated)
2011-04-03	James Heinrich	F-PM1	Factor: 2588998682141124015748293431
2011-01-07	Joss	NF-PM1	B1=50000
2011-01-02	Joss	NF-PM1	B1=30000
2010-12-19	Joss	NF-PM1	B1=20000
2009-02-03	Sturle Sunde	NF	no factor from 2^60 to 2^61