2 137 493 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
4903882904601539655705338431	28	92.0	2015-08-02 22:22:44

ECM

Digits	B1	Curves
25	50000	100 / 280

Estimated T-Level: 21.8 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Robert Friberg	C81CB3C8BEE992BA	0
Verified (Factored)	1999-03-26	Timothy S. Larson	C81CB3C8BEE992BA	161517

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-08	Oliver Kruse	96F0BDF6F97DBBCF	1	0	1	3
Verified	2017-11-18	kkmrkkblmbrbk	96F0BDF6F97DBBCF	1	452680	1	3

History

Date	User	Type	Result
2022-03-09	LordJulius	NF	no factor from 2^1 to 2^60
2017-11-18	kkmrkkblmbrbk	C-PRP	M2137493/4903882904601539655705338431 : 96F0BDF6F97DBBCF PRP: Verified PRP without proof (not generated)
2017-10-08	Oliver Kruse	C-PRP	M2137493/4903882904601539655705338431 : 96F0BDF6F97DBBCF PRP: Verified PRP without proof (not generated)
2016-03-26	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2015-08-02	guru	F-ECM	Factor: 4903882904601539655705338431 / (ECM curve 1, B1=50000, B2=5000000)
2015-03-18	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-18	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-12-03	c10ck3r	NF-PM1	B1=500000, B2=10000000, E=12
2013-02-21	dbaugh	NF	no factor from 2^62 to 2^63
2012-04-15	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2010-11-26	Oscar Östlin	NF-PM1	B1=80000, B2=1500000, E=6
2010-10-26	Oscar Östlin	NF-PM1	B1=75011
2009-01-05	Sturle Sunde	NF	no factor from 2^60 to 2^61