2 480 717 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
715752662696699903155673383	27	89.2	2020-05-25 13:32:50

ECM

Digits	B1	Curves
25	50000	42 / 280

Estimated T-Level: 20.8 ⓘ

TF below 2^64 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-05-16	Robert Goold	A31BDD7382CF7ECE	0
Verified (Factored)	1999-07-27	Stephen Wood	A31BDD7382CF7ECE	1476666
Verified (Factored)	2018-05-30	kkmrkkblmbrbk	A31BDD7382CF7ECE	1343148

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-05-26	Klaus Nordmann	F9E95830D3239373	1	1451828	5	3
Verified	2020-05-27	Luigi Morelli	F9E95830D3239373	1	607796	5	3

History

Date	User	Type	Result
2020-05-27	Luigi Morelli	C-PRP	M2480717/715752662696699903155673383 : F9E95830D3239373 PRP: Verified PRP without proof (not generated)
2020-05-26	Klaus Nordmann	C-PRP	M2480717/715752662696699903155673383 : F9E95830D3239373 PRP: Verified PRP without proof (not generated)
2020-05-25	mnd9	F-ECM	Factor: 715752662696699903155673383 / (ECM curve 3, B1=50000, B2=5000000, Sigma=1754789502776050)
2019-07-17	TJAOI	NF	no factor from 2^67 to 2^68
2018-05-30	kkmrkkblmbrbk	C-LL	A31BDD7382CF7ECE
2017-07-22	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
2015-10-29	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-03	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-03	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-31	mikr	NF-PM1	B1=2382500, B2=85770100, E=12
2014-09-23	Joss	NF-PM1	B1=125873
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-09	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2009-01-15	Sturle Sunde	NF	no factor from 2^60 to 2^61