2 630 791 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
1808716563577097205801320449583	31	100.5	2018-08-12 08:33:00

ECM

Digits	B1	Curves
25	50000	30 / 280

Estimated T-Level: 20.5 ⓘ

TF below 2^63 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Hubert Kunze	A09BB45BB2748364	0
Verified (Factored)	1999-04-23	Alan Lund	A09BB45BB2748364	890317
Verified (Factored)	2018-07-09	kkmrkkblmbrbk	A09BB45BB2748364	2157781

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-08-19	Gabriel Lignelli	BBD0294A0CE2FB63	1	2541337	5	3
Verified	2018-08-19	ATH	BBD0294A0CE2FB63	1	571802	5	3

P-1 factors

Date	Factor	B1	B2
2018-08-12	1808716563577097205801320449583	8000000	250000000

History

Date	User	Type	Result
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2018-08-19	ATH	C-PRP	M2630791/1808716563577097205801320449583 : BBD0294A0CE2FB63 PRP: Verified PRP without proof (not generated)
2018-08-19	Gabriel Lignelli	C-PRP	M2630791/1808716563577097205801320449583 : BBD0294A0CE2FB63 PRP: Verified PRP without proof (not generated)
2018-08-12	mikr	F-PM1	Factor: 1808716563577097205801320449583 / (P-1, B1=8000000, B2=250000000, E=12)
2018-07-09	kkmrkkblmbrbk	C-LL	A09BB45BB2748364
2017-09-01	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2016-01-19	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-23	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-23	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-15	Grant McCracken	NF	no factor from 2^61 to 2^62
2011-03-05	James Heinrich	NF-PM1	B1=300000, B2=8000000, E=12
2011-01-20	Joss	NF-PM1	B1=50000
2010-12-26	Joss	NF-PM1	B1=30000
2010-12-21	Joss	NF-PM1	B1=20000
2009-01-30	Sturle Sunde	NF	no factor from 2^60 to 2^61