2 868 001 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
81997680048302297978767	23	76.1	2021-07-10 11:10:37

ECM

Digits	B1	Curves
25	50000	88 / 280

Estimated T-Level: 21.6 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		Mike Hartle	AE34FE10F9C822AA	0
Verified (Factored)	1999-05-09	Loren Evers	AE34FE10F9C822AA	2271002
Verified (Factored)	2018-09-20	kkmrkkblmbrbk	AE34FE10F9C822AA	2537597

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-07-10	SRJ2877	0408B62F32CFE091	1	1562730	5	3

History

Date	User	Type	Result
2021-07-10	curtisc	CERT	PRP Certification Proof certified good
2021-07-10	SRJ2877	C-PRP	M2868001/81997680048302297978767 : 0408B62F32CFE091 PRP proof power = 7 PRP: Verified Proof certified good
2021-07-10	MarkS	F-ECM	Factor: 81997680048302297978767 / (ECM curve 1, B1=50000, B2=5000000, Sigma=7443388032225496)
2021-06-07	TJAOI	NF	no factor from 2^68 to 2^69
2020-03-13	masser	NF-PM1	B1=5000000, B2=200000000, E=12
2019-10-26	masser	NF-PM1	B1=2870000, B2=28700000, E=12
2019-01-08	chuenkit	NF	no factor from 2^67 to 2^68
2018-09-20	kkmrkkblmbrbk	C-LL	AE34FE10F9C822AA
2017-12-22	Joss	NF-PM1	B1=634788, B2=6347880, E=6
2017-11-12	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-03-11	Joss	NF-PM1	B1=317394, B2=3173940, E=6
2017-01-10	Joss	NF-PM1	B1=220413
2016-12-18	Joss	NF-PM1	B1=183678
2016-08-29	Joss	NF-PM1	B1=153065, B2=4830000, E=6
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-02-18	ramgeis	NF	no factor from 2^65 to 2^66
2015-04-21	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-21	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-10	dbaugh	NF	no factor from 2^62 to 2^63
2011-07-25	Rob_Dee	NF	no factor from 2^61 to 2^62
2011-02-11	markr	NF-PM1	B1=115000, B2=2415000, E=6
2011-01-21	Joss	NF-PM1	B1=50000
2011-01-03	Joss	NF-PM1	B1=30000
2010-12-21	Joss	NF-PM1	B1=20000
2009-07-03	Carsten Kossendey	NF-PM1	B1=15000, B2=157500
2009-02-13	Sturle Sunde	NF	no factor from 2^60 to 2^61

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