2 461 709 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
10881772569137873681191	23	73.2	2020-07-13 06:39:24

ECM

Digits	B1	Curves
25	50000	55 / 280

Estimated T-Level: 21.0 ⓘ

TF below 2^65 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Jerome Forissier	F17325BED7FD8D2F	0
Verified (Factored)	1999-07-12	Jeff Rennert	F17325BED7FD8D2F	603439
Verified (Factored)	2018-05-27	kkmrkkblmbrbk	F17325BED7FD8D2F	1809250

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-07-13	M Miller	EF825C00AF08A4DA	1	1952887	5	3
Verified	2020-07-14	marssystems	EF825C00AF08A4DA	1	213751	5	3

History

Date	User	Type	Result
2020-07-14	marssystems	C-PRP	M2461709/10881772569137873681191 : EF825C00AF08A4DA PRP: Verified PRP without proof (not generated)
2020-07-13	M Miller	C-PRP	M2461709/10881772569137873681191 : EF825C00AF08A4DA PRP: Verified PRP without proof (not generated)
2020-07-13	mnd9	F-ECM	Factor: 10881772569137873681191 / (ECM curve 1, B1=50000, B2=5000000, Sigma=6528225882494062)
2019-07-01	TJAOI	NF	no factor from 2^67 to 2^68
2018-05-27	kkmrkkblmbrbk	C-LL	F17325BED7FD8D2F
2017-07-15	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
2015-10-26	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-03	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-03	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-14	mikr	NF-PM1	B1=2382500, B2=85770100, E=12
2014-09-02	Joss	NF-PM1	B1=121073
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-07-24	Grant McCracken	NF	no factor from 2^61 to 2^62
2011-01-20	Oscar Östlin	NF-PM1	B1=95000, B2=1947500, E=6
2010-11-19	Joss	NF-PM1	B1=20000
2009-01-13	Sturle Sunde	NF	no factor from 2^60 to 2^61