1 813 699 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
6436335304832558007959047	25	82.4	2020-09-08 11:31:16

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Steve Freitag	3A7829B2E485F96F	0
Verified (Factored)		Michael Weingran	3A7829B2E485F96F	0
Verified (Factored)	2015-07-18	MadPoo	3A7829B2E485F96F	1040176

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-09-09	ViliamF	6619340A9B6CFD75	1	501041	5	3

History

Date	User	Type	Result
2020-09-09	Ben Delo	CERT	PRP Certification Proof certified good
2020-09-09	ViliamF	C-PRP	M1813699/6436335304832558007959047 : 6619340A9B6CFD75 PRP proof power = 7 PRP: Verified Proof certified good
2020-09-08	mnd9	F-ECM	Factor: 6436335304832558007959047 / (ECM curve 7, B1=50000, B2=5000000, Sigma=8760940870155094)
2019-07-01	TJAOI	NF	no factor from 2^67 to 2^68
2018-09-21	Joss	NF-PM1	B1=1813699, B2=181369900, E=12
2018-04-02	TJAOI	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^62
2015-09-02	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-18	MadPoo	C-LL	3A7829B2E485F96F
2015-05-20	mikr	NF-PM1	B1=2780000, B2=91760000, E=12
2015-04-22	snme2pm1	NF	no factor from 2^64 to 2^65
2015-04-22	snme2pm1	NF	no factor from 2^63 to 2^64
2014-09-22	Joss	NF-PM1	B1=170778
2014-05-13	Joss	NF-PM1	B1=135389
2011-02-09	Carsten Kossendey	NF-PM1	B1=100000, B2=1650000, E=6
2011-01-21	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-17	Architects Cubed	NF	no factor from 2^60 to 2^61