2 247 379 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
295469271474349066663467765001	30	97.9	2020-02-20 08:44:31

ECM

Digits	B1	Curves
25	50000	99 / 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)		John Borleis III	706FD7C8FE35E6EB	0
Verified (Factored)	1999-03-15	Robert Bernhard	706FD7C8FE35E6EB	1237263
Verified (Factored)	2018-04-22	kkmrkkblmbrbk	706FD7C8FE35E6EB	1945086

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-02-20	Christoph Zenger	979E78073D6B95B5	1	272397	5	3
Verified	2020-02-21	Niels_Mache_Nextcloud	979E78073D6B95B5	1	236482	5	3

History

Date	User	Type	Result
2020-02-21	Niels_Mache_Nextcloud	C-PRP	M2247379/295469271474349066663467765001 : 979E78073D6B95B5 PRP: Verified PRP without proof (not generated)
2020-02-20	Christoph Zenger	C-PRP	M2247379/295469271474349066663467765001 : 979E78073D6B95B5 PRP: Verified PRP without proof (not generated)
2020-02-20	daveward2005	F-ECM	Factor: 295469271474349066663467765001 / (ECM curve 3, B1=50000, B2=5000000)
2019-04-01	TJAOI	NF	no factor from 2^67 to 2^68
2018-04-22	kkmrkkblmbrbk	C-LL	706FD7C8FE35E6EB
2017-01-08	Conductor	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-12-05	Alexander Dubrovin	NF-PM1	B1=1000000, B2=10000000, E=12
2015-10-27	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-10	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-10	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-09-02	Joss	NF-PM1	B1=128560
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-05-03	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-06	markr	NF-PM1	B1=100000, B2=2075000, E=6
2010-11-11	Joss	NF-PM1	B1=30000
2010-11-06	Joss	NF-PM1	B1=15000
2009-01-11	Sturle Sunde	NF	no factor from 2^60 to 2^61