1 595 057 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
1249824347888155498420374911	28	90.0	2013-12-04 12:57:47

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		The Grebelius Family	4DA556214B6D6629	0
Verified (Factored)	1998-11-21	Trevor Green	4DA556214B6D6629	278474

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-02	Oliver Kruse	5A35AB43891AEB43	1	0	1	3
Verified	2017-10-31	ATH	5A35AB43891AEB43	1	373087	1	3

P-1 factors

Date	Factor	B1	B2
2013-12-04	1249824347888155498420374911	980000	28420000

History

Date	User	Type	Result
2017-10-31	ATH	C-PRP	M1595057/1249824347888155498420374911 : 5A35AB43891AEB43 PRP: Verified PRP without proof (not generated)
2017-10-02	Oliver Kruse	C-PRP	M1595057/1249824347888155498420374911 : 5A35AB43891AEB43 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2013-12-04	David Campeau	F-PM1	Factor: 1249824347888155498420374911
2011-02-04	James Heinrich	NF-PM1	B1=85000, B2=1445000, E=6
2010-06-29	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-05-02	Architects Cubed	NF	no factor from 2^60 to 2^61