1 867 799 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
76091679059461565657	20	66.0	2015-06-20 08:14:56

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)		amp	387059B231ADC286	0
Verified (Factored)	1998-12-21	Alex Nimmo Smith	387059B231ADC286	900592

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-04	Oliver Kruse	E491E05F41F32E1B	1	0	1	3
Verified	2017-11-07	kkmrkkblmbrbk	E491E05F41F32E1B	1	691207	1	3

History

Date	User	Type	Result
2017-11-07	kkmrkkblmbrbk	C-PRP	M1867799/76091679059461565657 : E491E05F41F32E1B PRP: Verified PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1867799/76091679059461565657 : E491E05F41F32E1B PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2015-06-20	Chang Chia-Tche	F-ECM	Factor: 76091679059461565657 / (ECM curve 2, B1=50000, B2=5000000)
2015-05-07	snme2pm1	NF	no factor from 2^64 to 2^65
2015-05-07	snme2pm1	NF	no factor from 2^63 to 2^64
2012-01-08	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