2 595 743 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
463616512088303134481	21	68.7	2020-12-02 20:53:12

ECM

Digits	B1	Curves
25	50000	79 / 280

Estimated T-Level: 21.4 ⓘ

TF below 2^66 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-02-12	Robert R. Fenichel	D25689F9ECF3429E	0
Verified (Factored)	1999-05-02	Norm Bussiere	D25689F9ECF3429E	57752
Verified (Factored)	2018-06-24	kkmrkkblmbrbk	D25689F9ECF3429E	992425

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-12-02	mrh	6B77272DF9765C96	1	1848767	5	3

History

Date	User	Type	Result
2020-12-02	Ben Delo	CERT	PRP Certification Proof certified good
2020-12-02	mrh	C-PRP	M2595743/463616512088303134481 : 6B77272DF9765C96 PRP proof power = 7 PRP: Verified Proof certified good
2020-12-02	daveward2005	F-ECM	Factor: 463616512088303134481 / (ECM curve 4, B1=50000, B2=5000000, Sigma=1987639487048197)
2019-04-08	TJAOI	NF	no factor from 2^67 to 2^68
2018-11-26	mikr	NF-PM1	B1=3000000, B2=135000000, E=12
2018-08-17	Joss	NF-PM1	B1=600000, B2=6000000, E=6
2018-08-11	Joss	NF-PM1	B1=600000
2018-06-24	kkmrkkblmbrbk	C-LL	D25689F9ECF3429E
2017-08-21	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
2015-11-06	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-27	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-27	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-23	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-02-25	James Heinrich	NF-PM1	B1=300000, B2=8000000, E=12
2011-01-15	Joss	NF-PM1	B1=50000
2010-11-16	Joss	NF-PM1	B1=20000
2009-01-31	Sturle Sunde	NF	no factor from 2^60 to 2^61