2 431 321 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
44466390806979846634327	23	75.2	2020-10-13 01:28:53

ECM

Digits	B1	Curves
25	50000	81 / 280

Estimated T-Level: 21.4 ⓘ

TF below 2^66 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Bjorn Skog	EEDB6FF1E1BAC34C	0
Verified (Factored)	1999-03-15	Marc Getty / Phil Fizur	EEDB6FF1E1BAC34C	19066
Verified (Factored)	2018-05-22	kkmrkkblmbrbk	EEDB6FF1E1BAC34C	952960

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-10-17	arnaud	5430A6A3278AF470	1	2129474	5	3

History

Date	User	Type	Result
2020-10-17	curtisc	CERT	PRP Certification Proof certified good
2020-10-17	arnaud	C-PRP	M2431321/44466390806979846634327 : 5430A6A3278AF470 PRP proof power = 7 PRP: Verified Proof certified good
2020-10-13	rextherunt	F-ECM	Factor: 44466390806979846634327 / (ECM curve 2, B1=50000, B2=5000000)
2019-07-17	TJAOI	NF	no factor from 2^67 to 2^68
2019-03-20	Sid & Andy	NF-PM1	B1=6000000, B2=180000000, E=12
2018-05-22	kkmrkkblmbrbk	C-LL	EEDB6FF1E1BAC34C
2017-10-23	Joss	NF-PM1	B1=600000, B2=6000000, E=6
2017-07-08	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
2015-10-25	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-27	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-27	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-12-04	Jerry Hallett	NF	no factor from 2^62 to 2^63
2012-06-05	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-02-27	James Heinrich	NF-PM1	B1=300000, B2=8000000, E=12
2011-01-18	Joss	NF-PM1	B1=50000
2010-10-08	Oscar Östlin	NF-PM1	B1=40000, B2=640000, E=6
2009-01-11	Sturle Sunde	NF	no factor from 2^60 to 2^61