2 741 303 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
480085899505203423209070103	27	88.6	2021-03-16 05:47:23

ECM

Digits	B1	Curves
25	50000	86 / 280

Estimated T-Level: 21.5 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		Vaughan Bennett	29B586CE214AF8A5	0
Verified (Factored)	1999-05-09	Gordon M. Spence	29B586CE214AF8A5	2486536
Verified (Factored)	2018-08-11	kkmrkkblmbrbk	29B586CE214AF8A5	529739

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-03-17	mrh	ADB8530F652C89E6	1	2195511	5	3

History

Date	User	Type	Result
2021-03-17	Simon Josefsson	CERT	PRP Certification Proof certified good
2021-03-17	mrh	C-PRP	M2741303/480085899505203423209070103 : ADB8530F652C89E6 PRP proof power = 7 PRP: Verified Proof certified good
2021-03-16	mnd9	F-ECM	Factor: 480085899505203423209070103 / (ECM curve 5, B1=50000, B2=5000000, Sigma=7323566366450318)
2019-02-15	chuenkit	NF	no factor from 2^67 to 2^68
2018-08-11	kkmrkkblmbrbk	C-LL	29B586CE214AF8A5
2017-10-05	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-11-04	mikr	NF-PM1	B1=2700000, B2=84000000, E=12
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2016-02-03	ramgeis	NF	no factor from 2^65 to 2^66
2015-04-13	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-13	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-04-07	markr	NF	no factor from 2^61 to 2^62
2011-04-29	James Heinrich	NF-PM1	B1=185000, B2=4625000, E=6
2011-01-20	Joss	NF-PM1	B1=50000
2010-12-29	Joss	NF-PM1	B1=30000
2010-12-19	Joss	NF-PM1	B1=20000
2009-01-31	Sturle Sunde	NF	no factor from 2^60 to 2^61