2 517 503 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
68269779479389327853239	23	75.9	2021-02-03 15:56:43

ECM

Digits	B1	Curves
25	50000	103 / 280

Estimated T-Level: 21.8 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)	1998-03-09	Denis G. CLAVE	B8ED833475EDDA46	0
Verified (Factored)	1999-05-02	Charles Gallo	B8ED833475EDDA46	913133
Verified (Factored)	2018-06-05	kkmrkkblmbrbk	B8ED833475EDDA46	1149088

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-02-03	mrh	DC9270D55408F3CB	1	502432	5	3

History

Date	User	Type	Result
2021-02-03	WeakForceBoson	CERT	PRP Certification Proof certified good
2021-02-03	mrh	C-PRP	M2517503/68269779479389327853239 : DC9270D55408F3CB PRP proof power = 7 PRP: Verified Proof certified good
2021-02-03	mnd9	F-ECM	Factor: 68269779479389327853239 / (ECM curve 5, B1=50000, B2=5000000, Sigma=8003524787376450)
2019-05-06	TJAOI	NF	no factor from 2^67 to 2^68
2018-06-05	kkmrkkblmbrbk	C-LL	B8ED833475EDDA46
2018-04-25	mikr	NF-PM1	B1=3000000, B2=135000000, E=12
2017-11-01	Joss	NF-PM1	B1=600000, B2=6000000, E=6
2017-07-31	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
2015-02-18	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-18	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-13	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-03-04	James Heinrich	NF-PM1	B1=300000, B2=8000000, E=12
2011-01-06	Joss	NF-PM1	B1=50000
2011-01-01	Joss	NF-PM1	B1=30000
2010-12-19	Joss	NF-PM1	B1=20000
2009-01-30	Sturle Sunde	NF	no factor from 2^60 to 2^61