2 510 971 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
32419826937891805988791	23	74.8	2020-05-13 08:36:46

ECM

Digits	B1	Curves
25	50000	34 / 280

Estimated T-Level: 20.6 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		Francois E Jaccard	F2E247C1262DB1D1	0
Verified (Factored)	1999-04-02	Johan Zwiekhorst	F2E247C1262DB1D1	579533
Verified (Factored)	2018-06-04	kkmrkkblmbrbk	F2E247C1262DB1D1	1917197

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-05-13	M Miller	CFB3548DED8CEF1A	1	1208795	5	3
Verified	2020-05-13	ATH	CFB3548DED8CEF1A	1	780061	5	3

History

Date	User	Type	Result
2020-05-13	ATH	C-PRP	M2510971/32419826937891805988791 : CFB3548DED8CEF1A PRP: Verified PRP without proof (not generated)
2020-05-13	M Miller	C-PRP	M2510971/32419826937891805988791 : CFB3548DED8CEF1A PRP: Verified PRP without proof (not generated)
2020-05-13	daveward2005	F-ECM	Factor: 32419826937891805988791 / (ECM curve 1, B1=50000, B2=5000000)
2019-05-13	TJAOI	NF	no factor from 2^67 to 2^68
2018-06-04	kkmrkkblmbrbk	C-LL	F2E247C1262DB1D1
2017-07-31	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-24	mikr	NF-PM1	B1=3200000, B2=112000000, E=12
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2015-11-05	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
2011-10-04	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
2009-01-30	Sturle Sunde	NF	no factor from 2^60 to 2^61