2 158 697 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
2194433765487885130303	22	70.9	2015-09-18 13:41:23

ECM

Digits	B1	Curves
25	50000	119 / 280

Estimated T-Level: 22.1 ⓘ

TF below 2^68 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Groves	CD4210697129AA2A	0
Verified (Factored)	1999-02-07	Mark Jansen	CD4210697129AA2A	137412

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-30	alpertron	457B2BA621630F85	1	0	1	3
Verified	2017-10-21	Oliver Kruse	457B2BA621630F85	1	713921	1	3

History

Date	User	Type	Result
2022-03-09	LordJulius	NF	no factor from 2^1 to 2^60
2017-10-21	Oliver Kruse	C-PRP	M2158697/2194433765487885130303 : 457B2BA621630F85 PRP: Verified PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M2158697/2194433765487885130303 : 457B2BA621630F85 PRP: Verified PRP without proof (not generated)
2016-03-31	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2015-09-18	lopper	F-ECM	Factor: 2194433765487885130303 / (ECM curve 3, B1=50000, B2=5000000)
2015-03-22	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-22	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-03	Joss	NF-PM1	B1=149733
2013-09-08	ramgeis	NF	no factor from 2^62 to 2^63
2011-01-23	markr	NF-PM1	B1=120000, B2=2340000, E=6
2011-01-15	Joss	NF-PM1	B1=50000
2010-11-07	Joss	NF-PM1	B1=45000
2010-11-07	Joss	NF-PM1	B1=30000
2010-11-04	Joss	NF-PM1	B1=15000
2009-01-06	Sturle Sunde	NF	no factor from 2^61 to 2^62
2009-01-04	Sturle Sunde	NF	no factor from 2^60 to 2^61