3 063 817 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
4210213544074810876296431	25	81.8	2021-05-09 22:53:49

ECM

Digits	B1	Curves
25	50000	58 / 280

Estimated T-Level: 21.0 ⓘ

TF below 2^65 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Gary Hanson	8F4AAB3FD071E5A5	0
Verified (Factored)	1999-05-30	Ola Svallmark	8F4AAB3FD071E5A5	2383411

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-07-09	LaurV	9C779B62FF8A903F	1	2145170	5	3

History

Date	User	Type	Result
2022-02-11	Joss	NF-PM1	B1=1000000, B2=119912100
2022-01-20	Joss	NF	no factor from 2^67 to 2^68
2021-07-09	ky0uraku	CERT	PRP Certification Proof certified good
2021-07-09	LaurV	C-PRP	M3063817/4210213544074810876296431 : 9C779B62FF8A903F PRP proof power = 7 PRP: Verified Proof certified good
2021-05-09	Zenzoma	F-ECM	Factor: 4210213544074810876296431 / (ECM curve 1, B1=50000, B2=5000000, Sigma=2632424744353841)
2021-03-30	TJAOI	NF	no factor from 2^68 to 2^69
2018-08-01	ramgeis	NF	no factor from 2^67 to 2^68
2017-12-05	mikr	NF-PM1	B1=3000000, B2=100000000, E=12
2017-05-09	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-03-05	Squeeky_Squirrel	NF-PM1	B1=195000, B2=5411250, E=6
2015-06-06	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
2013-01-07	dbaugh	NF	no factor from 2^62 to 2^63
2011-10-11	Sid & Andy	NF	no factor from 2^61 to 2^62
2010-09-24	markr	NF-PM1	B1=110000, B2=2447500, E=6
2009-02-13	Sturle Sunde	NF	no factor from 2^60 to 2^61