2 756 797 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
75115699912032977544559	23	76.0	2020-08-03 13:32:54

ECM

Digits	B1	Curves
25	50000	31 / 280

Estimated T-Level: 20.6 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		David Linton	BA2C9F9E847EF948	0
Verified (Factored)	1999-07-04	Goede Schueler/Christoph Steinbeck	BA2C9F9E847EF948	989209
Verified (Factored)	2018-08-15	kkmrkkblmbrbk	BA2C9F9E847EF948	1897109

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-08-07	fre_games	21F7B366D88F6EAD	1	2192360	5	3
Verified	2020-08-07	marssystems	21F7B366D88F6EAD	1	2085085	5	3

History

Date	User	Type	Result
2020-08-07	marssystems	C-PRP	M2756797/75115699912032977544559 : 21F7B366D88F6EAD PRP: Verified PRP without proof (not generated)
2020-08-07	fre_games	C-PRP	M2756797/75115699912032977544559 : 21F7B366D88F6EAD PRP: Verified PRP without proof (not generated)
2020-08-03	GAN	F-ECM	Factor: 75115699912032977544559 / (ECM curve 1, B1=50000, B2=5000000, Sigma=5728836509154276)
2019-02-20	chuenkit	NF	no factor from 2^67 to 2^68
2018-08-15	kkmrkkblmbrbk	C-LL	BA2C9F9E847EF948
2017-10-09	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-01-10	Joss	NF-PM1	B1=228000
2016-12-27	mikr	NF-PM1	B1=2700000, B2=84000000, E=12
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-02-05	ramgeis	NF	no factor from 2^65 to 2^66
2015-04-21	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-21	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-03-27	markr	NF	no factor from 2^61 to 2^62
2011-05-07	James Heinrich	NF-PM1	B1=190000, B2=4655000, E=6
2011-01-23	Joss	NF-PM1	B1=50000
2011-01-02	Joss	NF-PM1	B1=30000
2010-12-21	Joss	NF-PM1	B1=20000
2009-02-13	Sturle Sunde	NF	no factor from 2^60 to 2^61