2 708 851 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
9427059982422050038127	22	73.0	2016-02-04 05:41:42

ECM

Digits	B1	Curves
25	50000	15 / 280

Estimated T-Level: 20.3 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Thomas Nokleby	907266F9426068CD	0
Verified (Factored)	1999-04-23	Harald Alvestrand	907266F9426068CD	1386057

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-19	Oliver Kruse	1CC1AC73795E56BB	1	2302209	5	3
Verified	2017-12-04	kkmrkkblmbrbk	1CC1AC73795E56BB	1	2534053	5	3

History

Date	User	Type	Result
2023-02-25	USAFSS	NF-PM1	B1=360000, B2=287380170
2017-12-04	kkmrkkblmbrbk	C-PRP	M2708851/9427059982422050038127 : 1CC1AC73795E56BB PRP: Verified PRP without proof (not generated)
2017-10-19	Oliver Kruse	C-PRP	M2708851/9427059982422050038127 : 1CC1AC73795E56BB PRP: Verified PRP without proof (not generated)
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-02-04	bam	F-ECM	Factor: 9427059982422050038127 / (ECM curve 3, B1=50000, B2=5000000)
2016-01-29	ramgeis	NF	no factor from 2^65 to 2^66
2015-04-13	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-13	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-10	dbaugh	NF	no factor from 2^62 to 2^63
2012-05-01	Grant McCracken	NF	no factor from 2^61 to 2^62
2011-04-01	James Heinrich	NF-PM1	B1=300000, B2=8000000, E=12
2011-01-18	Joss	NF-PM1	B1=50000
2010-12-26	Joss	NF-PM1	B1=30000
2010-12-19	Joss	NF-PM1	B1=20000
2009-01-31	Sturle Sunde	NF	no factor from 2^60 to 2^61