2 645 549 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
4844684264844985198769	22	72.0	2021-06-05 21:23:53

ECM

Digits	B1	Curves
25	50000	98 / 280

Estimated T-Level: 21.8 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Matthias Menzel	6CF7CA10232A8895	0
Verified (Factored)	1999-06-06	Jörg Thomsen	6CF7CA10232A8895	2638318
Verified (Factored)	2018-07-14	kkmrkkblmbrbk	6CF7CA10232A8895	1636686

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-06-07	LaurV	334457BC365CFC22	1	87634	5	3

History

Date	User	Type	Result
2021-06-08	WeakForceBoson	CERT	PRP Certification Proof certified good
2021-06-07	LaurV	C-PRP	M2645549/4844684264844985198769 : 334457BC365CFC22 PRP proof power = 7 PRP: Verified Proof certified good
2021-06-05	kutens	F-ECM	Factor: 4844684264844985198769 / (ECM curve 1, B1=50000, B2=5000000, Sigma=7560012610967701)
2019-11-28	masser	NF-PM1	B1=2000000, B2=50000000, E=12
2019-02-25	TJAOI	NF	no factor from 2^67 to 2^68
2018-07-14	kkmrkkblmbrbk	C-LL	6CF7CA10232A8895
2017-09-08	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-05-08	Joss	NF-PM1	B1=360000, B2=3600000, E=6
2016-12-29	Joss	NF-PM1	B1=206385
2016-12-27	Joss	NF-PM1	B1=171988
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2016-01-21	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
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-07	Grant McCracken	NF	no factor from 2^61 to 2^62
2011-01-19	James Heinrich	NF-PM1	B1=180000, B2=4275000, E=6
2009-06-22	USAFSS	NF-PM1	B1=30000, B2=420000
2009-01-27	Sturle Sunde	NF	no factor from 2^60 to 2^61