2 896 501 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
311691311735215277783	21	68.1	2011-01-27 05:29:47

ECM

Digits	B1	Curves
25	50000	3 / 280

Estimated T-Level: 20.1 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		Thomas Honold	16C77577BB0022B6	0
Verified (Factored)	1999-07-27	Wayne Scott	16C77577BB0022B6	2828281

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-24	Oliver Kruse	7BA468FB26F34FAA	1	1782039	5	3
Verified	2017-12-08	kkmrkkblmbrbk	7BA468FB26F34FAA	1	1726210	5	3

History

Date	User	Type	Result
2023-04-16	Kevin_9611	NF-PM1	B1=240000, B2=279852300
2017-12-08	kkmrkkblmbrbk	C-PRP	M2896501/311691311735215277783 : 7BA468FB26F34FAA PRP: Verified PRP without proof (not generated)
2017-10-24	Oliver Kruse	C-PRP	M2896501/311691311735215277783 : 7BA468FB26F34FAA PRP: Verified PRP without proof (not generated)
2011-01-27	Carsten Kossendey	F-PM1	Factor: 311691311735215277783
2010-12-24	Joss	NF-PM1	B1=20000
2009-07-03	Carsten Kossendey	NF-PM1	B1=15000, B2=168750
2009-02-12	Sturle Sunde	NF	no factor from 2^60 to 2^61