2 508 619 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
332098966307658978098639	24	78.1	2016-07-02 04:55:43

ECM

Digits	B1	Curves
25	50000	20 / 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)		Eric Ford	2CA8B424384A6651	0
Verified (Factored)	1999-06-15	John R. Savage	2CA8B424384A6651	49154

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-14	kkmrkkblmbrbk	404116603C87BDE5	1	618856	5	3
Verified	2017-11-07	Oliver Kruse	404116603C87BDE5	1	1496721	5	3

History

Date	User	Type	Result
2017-11-07	Oliver Kruse	C-PRP	M2508619/332098966307658978098639 : 404116603C87BDE5 PRP: Verified PRP without proof (not generated)
2017-10-14	kkmrkkblmbrbk	C-PRP	M2508619/332098966307658978098639 : 404116603C87BDE5 PRP: Verified PRP without proof (not generated)
2016-07-02	bam	F-ECM	Factor: 332098966307658978098639 / (ECM curve 2, B1=50000, B2=5000000)
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2016-02-12	mikr	NF-PM1	B1=3200000, B2=112000000, E=12
2015-11-04	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-18	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-18	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-12	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-10-03	markr	NF-PM1	B1=165000, B2=3918750, E=6
2011-01-04	Joss	NF-PM1	B1=50000
2011-01-01	Joss	NF-PM1	B1=30000
2010-12-16	Joss	NF-PM1	B1=20000
2009-02-07	Sturle Sunde	NF	no factor from 2^60 to 2^61