1 905 679 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
51015855005197569103	20	65.5	2011-06-06 14:39:36

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)		Thomas Honold	43B7F7DF6CAACC6B	0
Verified (Factored)	1999-10-07	RabeRudi	43B7F7DF6CAACC6B	800311

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-04	Oliver Kruse	CE6A35A8B058D02E	1	0	1	3
Verified	2017-11-09	kkmrkkblmbrbk	CE6A35A8B058D02E	1	1245921	1	3

History

Date	User	Type	Result
2017-11-09	kkmrkkblmbrbk	C-PRP	M1905679/51015855005197569103 : CE6A35A8B058D02E PRP: Verified PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1905679/51015855005197569103 : CE6A35A8B058D02E PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2011-06-06	kurly	F-PM1	Factor: 51015855005197569103
2011-02-08	GrunwalderGIMP	NF	no factor from 2^62 to 2^63
2011-02-08	GrunwalderGIMP	NF	no factor from 2^61 to 2^62
2009-05-25	Architects Cubed	NF	no factor from 2^60 to 2^61