3 284 443 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
40486443430768175787599	23	75.1	2021-03-12 16:08:46

ECM

Digits	B1	Curves
25	50000	27 / 280

Estimated T-Level: 20.5 ⓘ

TF below 2^63 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Greg Hewgill	E3C577516326D15C	0
Verified (Factored)	1999-06-15	David Phillips	E3C577516326D15C	1778511

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-03-13	Luigi Morelli	37A0F5AC059CA80C	1	641297	5	3

History

Date	User	Type	Result
2022-09-12	Joss	NF-PM1	B1=1000000, B2=241152450
2022-04-02	Joss	NF-PM1	B1=1000000, B2=134316000
2021-03-16	mikr	NF-PM1	B1=4000000, B2=150000000, E=12
2021-03-13	Stephen P Woodthorpe	CERT	PRP Certification Proof certified good
2021-03-13	Luigi Morelli	C-PRP	M3284443/40486443430768175787599 : 37A0F5AC059CA80C PRP proof power = 7 PRP: Verified Proof certified good
2021-03-12	mnd9	F-ECM	Factor: 40486443430768175787599 / (ECM curve 5, B1=50000, B2=5000000, Sigma=7119738956120591)
2018-11-26	TJAOI	NF	no factor from 2^67 to 2^68
2017-04-06	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-01-25	Joss	NF-PM1	B1=383400, B2=3834000, E=6
2015-06-29	Tha	NF	no factor from 2^65 to 2^66
2015-02-07	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-07	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-10	Joss	NF-PM1	B1=99084
2014-06-26	-Anonymous-	NF-PM1	B1=79542
2012-12-30	dbaugh	NF	no factor from 2^62 to 2^63
2011-09-30	markr	NF	no factor from 2^61 to 2^62
2011-09-22	USAFSS	NF-PM1	B1=60000, B2=1065000, E=6
2009-07-09	Carsten Kossendey	NF-PM1	B1=15000, B2=191250
2009-04-01	S485122	NF	no factor from 2^60 to 2^61