2 650 789 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
46081173670481218776839628817	29	95.2	2021-03-07 11:32:16

ECM

Digits	B1	Curves
25	50000	93 / 280

Estimated T-Level: 21.7 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		John B. Meaders,Jr.	303FF54ACAA78F2F	0
Verified (Factored)	1999-06-15	Ricardo Kawazoe Aguilera	303FF54ACAA78F2F	330434
Verified (Factored)	2018-07-19	kkmrkkblmbrbk	303FF54ACAA78F2F	213040

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-03-07	mrh	14F951968E9515CA	1	2110590	5	3

History

Date	User	Type	Result
2021-03-07	Ben Delo	CERT	PRP Certification Proof certified good
2021-03-07	mrh	C-PRP	M2650789/46081173670481218776839628817 : 14F951968E9515CA PRP proof power = 7 PRP: Verified Proof certified good
2021-03-07	daveward2005	F-ECM	Factor: 46081173670481218776839628817 / (ECM curve 3, B1=50000, B2=5000000, Sigma=5715022003706824)
2019-11-24	masser	NF-PM1	B1=2000000, B2=50000000, E=12
2019-05-20	TJAOI	NF	no factor from 2^67 to 2^68
2018-07-19	kkmrkkblmbrbk	C-LL	303FF54ACAA78F2F
2017-09-08	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-05-08	Joss	NF-PM1	B1=360000, B2=3600000, E=6
2017-01-10	Joss	NF-PM1	B1=206385
2016-12-29	Joss	NF-PM1	B1=171988
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2016-01-21	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-23	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-23	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-05-30	markr	NF	no factor from 2^61 to 2^62
2011-01-18	James Heinrich	NF-PM1	B1=180000, B2=4275000, E=6
2009-06-22	USAFSS	NF-PM1	B1=30000, B2=420000
2009-01-27	Sturle Sunde	NF	no factor from 2^60 to 2^61