1 860 737 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
155270694675711207007	21	67.1	2015-01-21 20:05:19

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 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)		Joseph Charrier	151448C836ED5093	0
Verified (Factored)	1998-12-21	Aaron Z. Ward	151448C836ED5093	1327726

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-04	Oliver Kruse	D76A69041E60EF73	1	0	1	3
Verified	2017-11-07	kkmrkkblmbrbk	D76A69041E60EF73	1	1438736	1	3

History

Date	User	Type	Result
2017-11-07	kkmrkkblmbrbk	C-PRP	M1860737/155270694675711207007 : D76A69041E60EF73 PRP: Verified PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1860737/155270694675711207007 : D76A69041E60EF73 PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2015-01-21	mikr	F-ECM	Factor: 155270694675711207007 / (ECM curve 2, B1=50000, B2=5000000)
2012-01-05	markr	NF-PM1	B1=275000, B2=6000000, E=12
2011-03-08	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-06	Architects Cubed	NF	no factor from 2^60 to 2^61