3 716 857 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
142926226343284456539919	24	76.9	2021-10-09 15:05:10

ECM

Digits	B1	Curves
25	50000	22 / 280

Estimated T-Level: 20.4 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		Simon Burge	CAF1B6FBE4622A72	0
Bad	1998-01-16	Faustini Marco	598A7D0D72D35900	0
Verified (Factored)	1999-09-14	Mark Reid	CAF1B6FBE4622A72	3225010

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-10-15	kutens	4DCE921FCEE372D0	1	2706912	5	3

History

Date	User	Type	Result
2022-05-24	Joss	NF-PM1	B1=100000, B2=130364850
2022-03-04	Joss	NF-PM1	B1=90000
2021-10-15	Stephen P Woodthorpe	CERT	PRP Certification Proof certified good
2021-10-15	kutens	C-PRP	M3716857/142926226343284456539919 : 4DCE921FCEE372D0 PRP proof power = 7 PRP: Verified Proof certified good
2021-10-09	daveward2005	F-ECM	Factor: 142926226343284456539919 / (ECM curve 3, B1=50000, B2=5000000, Sigma=5646309864067284)
2021-05-19	axn	NF-PM1	B1=14000000, B2=700000000
2021-03-08	axn	NF	no factor from 2^69 to 2^70
2020-12-15	axn	NF	no factor from 2^68 to 2^69
2019-01-14	TJAOI	NF	no factor from 2^67 to 2^68
2016-11-01	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-24	ramgeis	NF	no factor from 2^65 to 2^66
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-01-22	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-22	VictordeHollander	NF	no factor from 2^63 to 2^64
2012-12-14	Squeeky_Squirrel	NF-PM1	B1=245000, B2=7717500, E=12
2012-04-19	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-04-24	Grant McCracken	NF	no factor from 2^61 to 2^62
2009-07-06	Carsten Kossendey	NF-PM1	B1=20000, B2=265000
2009-03-06	S485122	NF	no factor from 2^60 to 2^61