2 744 969 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
50708037052383925164526607	26	85.4	2021-07-07 14:15:48

ECM

Digits	B1	Curves
25	50000	101 / 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)		Lance Optican	B5EB55B43AA14C1C	0
Verified (Factored)	1999-04-23	Joe George	B5EB55B43AA14C1C	36808
Verified (Factored)	2018-08-12	kkmrkkblmbrbk	B5EB55B43AA14C1C	1972162

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-07-08	Luigi Morelli	206E598EEE4A4163	1	1601286	5	3

History

Date	User	Type	Result
2021-07-08	AmorTenderly	CERT	PRP Certification Proof certified good
2021-07-08	Luigi Morelli	C-PRP	M2744969/50708037052383925164526607 : 206E598EEE4A4163 PRP proof power = 7 PRP: Verified Proof certified good
2021-07-07	daveward2005	F-ECM	Factor: 50708037052383925164526607 / (ECM curve 2, B1=50000, B2=5000000, Sigma=8766629771341584)
2019-02-18	chuenkit	NF	no factor from 2^67 to 2^68
2018-08-12	kkmrkkblmbrbk	C-LL	B5EB55B43AA14C1C
2017-10-05	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-11-16	mikr	NF-PM1	B1=2700000, B2=84000000, E=12
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-02-04	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
2012-04-01	markr	NF	no factor from 2^61 to 2^62
2011-05-01	James Heinrich	NF-PM1	B1=185000, B2=4625000, E=6
2011-01-21	Joss	NF-PM1	B1=50000
2010-12-29	Joss	NF-PM1	B1=30000
2010-12-21	Joss	NF-PM1	B1=20000
2009-01-31	Sturle Sunde	NF	no factor from 2^60 to 2^61