2 442 227 Exponent Status

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GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
2917580515306025071161809	25	81.3	2021-03-15 20:59:03

ECM

Digits	B1	Curves
25	50000	116 / 280

Estimated T-Level: 22.1 ⓘ

TF below 2^68 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Bad		Michael Taylor	07B917E1B2559914	0
Verified (Factored)	1998-06-14	John Schuster	907F1277F8A77AA5	0
Verified (Factored)	1999-03-26	Bent Ivar Helland	907F1277F8A77AA5	1092827
Verified (Factored)	2018-05-24	kkmrkkblmbrbk	907F1277F8A77AA5	980808

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-03-15	ATH	0ED141FA0AA017FE	1	1135710	5	3

History

Date	User	Type	Result
2021-03-15	DConners	CERT	PRP Certification Proof certified good
2021-03-15	ATH	C-PRP	M2442227/2917580515306025071161809 : 0ED141FA0AA017FE PRP proof power = 7 PRP: Verified Proof certified good
2021-03-15	mnd9	F-ECM	Factor: 2917580515306025071161809 / (ECM curve 1, B1=50000, B2=5000000, Sigma=6828724535081117)
2019-04-22	TJAOI	NF	no factor from 2^67 to 2^68
2018-05-24	kkmrkkblmbrbk	C-LL	907F1277F8A77AA5
2017-07-12	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
2015-10-25	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
2014-01-19	mikr	NF-PM1	B1=1172000, B2=48000000, E=12
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-06	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-12	Oscar Östlin	NF-PM1	B1=95000, B2=1947500, E=6
2010-11-17	Joss	NF-PM1	B1=20000
2009-01-15	Sturle Sunde	NF	no factor from 2^60 to 2^61