2 280 403 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
178880824916263423690897	24	77.2	2011-01-15 00:25:14

ECM

Digits	B1	Curves
25	50000	83 / 280

Estimated T-Level: 21.5 ⓘ

TF below 2^66 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Steve Buie	7CF14698B8F924AB	0
Verified (Factored)	1999-05-02	Ilkka Loppi	7CF14698B8F924AB	1329903

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-11	Oliver Kruse	A51002D1BBC8E378	1	0	1	3
Verified	2017-11-22	kkmrkkblmbrbk	A51002D1BBC8E378	1	1901974	1	3

History

Date	User	Type	Result
2017-11-22	kkmrkkblmbrbk	C-PRP	M2280403/178880824916263423690897 : A51002D1BBC8E378 PRP: Verified PRP without proof (not generated)
2017-10-11	Oliver Kruse	C-PRP	M2280403/178880824916263423690897 : A51002D1BBC8E378 PRP: Verified PRP without proof (not generated)
2016-04-10	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2011-01-15	Oscar Östlin	F-PM1	Factor: 178880824916263423690897
2010-11-24	Oscar Östlin	NF-PM1	B1=75011
2010-11-14	Joss	NF-PM1	B1=20000
2010-11-07	Joss	NF-PM1	B1=15000
2009-01-15	Sturle Sunde	NF	no factor from 2^60 to 2^61