2 750 773 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
7643183700748945540035799	25	82.7	2021-11-25 17:34:39

ECM

Digits	B1	Curves
25	50000	116 / 280

Estimated T-Level: 22.1 ⓘ

TF below 2^68 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Matthieu Klein	966F345CEDF33519	0
Verified (Factored)	1999-05-23	tom ehlert	966F345CEDF33519	2275334
Verified (Factored)	2018-08-14	kkmrkkblmbrbk	966F345CEDF33519	1200521

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-12-03	LordJulius	7C8EA6D340A8103F	1	2448487	5	3

History

Date	User	Type	Result
2021-12-03	curtisc	CERT	PRP Certification Proof certified good
2021-12-03	LordJulius	C-PRP	M2750773/7643183700748945540035799 : 7C8EA6D340A8103F PRP proof power = 7 PRP: Verified Proof certified good
2021-11-25	daveward2005	F-ECM	Factor: 7643183700748945540035799 / (ECM curve 2, B1=50000, B2=5000000, Sigma=6312184561902007)
2021-06-28	TJAOI	NF	no factor from 2^68 to 2^69
2019-02-19	chuenkit	NF	no factor from 2^67 to 2^68
2018-08-14	kkmrkkblmbrbk	C-LL	966F345CEDF33519
2017-10-09	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-12-06	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	Grant McCracken	NF	no factor from 2^61 to 2^62
2011-05-04	James Heinrich	NF-PM1	B1=190000, B2=4655000, E=6
2011-01-22	Joss	NF-PM1	B1=50000
2011-01-02	Joss	NF-PM1	B1=30000
2010-12-21	Joss	NF-PM1	B1=20000
2009-01-28	Sturle Sunde	NF	no factor from 2^60 to 2^61