2 632 477 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
863811012736831745763091553	27	89.5	2019-10-30 03:32:12

ECM

Digits	B1	Curves
25	50000	88 / 280

Estimated T-Level: 21.6 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Don Sandstrom	359A4BA6F876D40A	0
Verified (Factored)	1999-06-15	Jeff Rennert	359A4BA6F876D40A	2352665
Verified (Factored)	2018-07-10	kkmrkkblmbrbk	359A4BA6F876D40A	547279

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-10-30	Niels_Mache_Nextcloud	74904F83697A1D18	1	667961	5	3
Verified	2019-11-01	arnaud	74904F83697A1D18	1	2503560	5	3

P-1 factors

Date	Factor	B1	B2
2019-10-30	863811012736831745763091553	2640000	26400000

History

Date	User	Type	Result
2019-11-01	arnaud	C-PRP	M2632477/863811012736831745763091553 : 74904F83697A1D18 PRP: Verified PRP without proof (not generated)
2019-10-30	Niels_Mache_Nextcloud	C-PRP	M2632477/863811012736831745763091553 : 74904F83697A1D18 PRP: Verified PRP without proof (not generated)
2019-10-30	masser	F-PM1	Factor: 863811012736831745763091553 / (P-1, B1=2640000, B2=26400000, E=12)
2018-07-10	kkmrkkblmbrbk	C-LL	359A4BA6F876D40A
2017-04-22	Joss	NF-PM1	B1=360000, B2=3600000, E=6
2016-12-26	Joss	NF-PM1	B1=207360
2016-12-24	Joss	NF-PM1	B1=172800
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2015-12-27	ramgeis	NF	no factor from 2^70 to 2^71
2014-03-08	Never Odd Or Even	NF	no factor from 2^69 to 2^70
2014-03-08	Never Odd Or Even	NF	no factor from 2^68 to 2^69
2014-03-08	Never Odd Or Even	NF	no factor from 2^67 to 2^68
2014-03-08	Never Odd Or Even	NF	no factor from 2^66 to 2^67
2014-03-08	Never Odd Or Even	NF	no factor from 2^65 to 2^66
2013-10-22	David Campeau	NF	no factor from 2^64 to 2^65
2012-06-08	lycorn	NF	no factor from 2^61 to 2^64
2011-01-17	James Heinrich	NF-PM1	B1=180000, B2=4275000, E=6
2009-06-20	USAFSS	NF-PM1	B1=30000, B2=420000
2009-01-26	Sturle Sunde	NF	no factor from 2^60 to 2^61