2 211 061 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
299710958298635043625889096161	30	97.9	2015-11-12 05:08:12

ECM

Digits	B1	Curves
25	50000	89 / 280

Estimated T-Level: 21.6 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)	1997-11-21	David Burns	3FDA70C9A715E08C	0
Verified (Factored)	1999-02-21	I-Gene Leong	3FDA70C9A715E08C	1054080

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-30	alpertron	BB2E1C6BC9974FD8	1	0	1	3
Verified	2017-10-25	Oliver Kruse	BB2E1C6BC9974FD8	1	1843924	1	3

P-1 factors

Date	Factor	B1	B2
2015-11-12	299710958298635043625889096161	1200000	5500000

History

Date	User	Type	Result
2022-03-09	LordJulius	NF	no factor from 2^1 to 2^60
2017-10-25	Oliver Kruse	C-PRP	M2211061/299710958298635043625889096161 : BB2E1C6BC9974FD8 PRP: Verified PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M2211061/299710958298635043625889096161 : BB2E1C6BC9974FD8 PRP: Verified PRP without proof (not generated)
2016-04-19	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2015-11-12	Alexander Dubrovin	F-PM1	Factor: 299710958298635043625889096161 / (P-1, B1=1200000, B2=5500000, E=6)
2015-11-12	Alexander Dubrovin	NF-PM1	B1=600000, B2=2500000, E=6
2015-10-22	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-06	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-06	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-17	Joss	NF-PM1	B1=148058
2014-06-24	Joss	NF-PM1	B1=119029
2013-12-04	LaurV	NF	no factor from 2^62 to 2^63
2011-01-08	markr	NF-PM1	B1=90000, B2=1665000, E=6
2010-11-10	Joss	NF-PM1	B1=30000
2010-11-06	-Anonymous-	NF-PM1	B1=15000
2009-01-08	Sturle Sunde	NF	no factor from 2^61 to 2^62
2009-01-02	Sturle Sunde	NF	no factor from 2^60 to 2^61