2 470 199 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
47717213610641822304491563111	29	95.3	2021-09-20 02:37:29

ECM

Digits	B1	Curves
25	50000	147 / 280

Estimated T-Level: 22.6 ⓘ

TF below 2^70 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Don Weber	4E42E1DE8B77A3CA	0
Verified (Factored)	1999-05-02	Robert Mutschler	4E42E1DE8B77A3CA	687921
Verified (Factored)	2018-05-28	kkmrkkblmbrbk	4E42E1DE8B77A3CA	1103923

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-09-21	SRJ2877	55693332FF561E82	1	420333	5	3

History

Date	User	Type	Result
2021-09-21	Ben Delo	CERT	PRP Certification Proof certified good
2021-09-21	SRJ2877	C-PRP	M2470199/47717213610641822304491563111 : 55693332FF561E82 PRP proof power = 7 PRP: Verified Proof certified good
2021-09-20	mnd9	F-ECM	Factor: 47717213610641822304491563111 / (ECM curve 7, B1=50000, B2=5000000, Sigma=7707813937471804)
2021-06-17	TJAOI	NF	no factor from 2^68 to 2^69
2019-06-10	TJAOI	NF	no factor from 2^67 to 2^68
2019-04-23	Sid & Andy	NF-PM1	B1=6000000, B2=180000000, E=12
2018-05-28	kkmrkkblmbrbk	C-LL	4E42E1DE8B77A3CA
2017-07-22	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
2015-10-27	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
2013-10-23	David Campeau	NF-PM1	B1=590000, B2=15930000, E=12
2013-02-21	dbaugh	NF	no factor from 2^62 to 2^63
2012-08-01	Grant McCracken	NF	no factor from 2^61 to 2^62
2010-12-02	Joss	NF-PM1	B1=247019
2010-11-19	Joss	NF-PM1	B1=20000
2009-01-14	Sturle Sunde	NF	no factor from 2^60 to 2^61