2 952 613 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷⁰

TF target 2⁶⁴

TF below 2^76 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	10000000
B2 =	19214984250

ECM

Digits	B1	Curves
25	50000	238 / 280

Estimated T-Level: 24.3 ⓘ

Status	Date	User	Residue	Shift
Verified		Dax Prather	FEC8B1C5AAEAA8BB	0
Verified	1998-06-20	kimon berlin	FEC8B1C5AAEAA8BB	0
Verified	1999-05-16	Philip Hutson	FEC8B1C5AAEAA8BB	2381083

History

Date	User	Type	Result
2023-07-17	TJAOI	NF	no factor from 2^69 to 2^70
2023-03-04	mikr	NF-PM1	B1=10000000, B2=19214984250
2022-08-28	Wentao Huang	NF-PM1	B1=1420000, B2=4022278260
2021-05-12	TJAOI	NF	no factor from 2^68 to 2^69
2018-12-24	chuenkit	NF	no factor from 2^67 to 2^68
2017-11-28	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-09-05	Joss	NF-PM1	B1=1180071, B2=22000000, E=12
2016-02-25	ramgeis	NF	no factor from 2^65 to 2^66
2015-05-08	VictordeHollander	NF-PM1	B1=1000000, B2=20000000, E=12
2015-05-07	Joss	NF-PM1	B1=1072792
2015-05-01	Joss	NF-PM1	B1=975266
2015-04-27	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-27	VictordeHollander	NF	no factor from 2^63 to 2^64
2015-04-08	Joss	NF-PM1	B1=806006
2015-03-29	Joss	NF-PM1	B1=732733
2015-03-14	Joss	NF-PM1	B1=605565
2015-03-12	Joss	NF-PM1	B1=550514
2015-03-02	Joss	NF-PM1	B1=500468
2015-02-25	Joss	NF-PM1	B1=454971
2015-02-05	Joss	NF-PM1	B1=413610
2015-02-03	Joss	NF-PM1	B1=206805
2015-02-01	Joss	NF-PM1	B1=188005
2015-01-31	Joss	NF-PM1	B1=170914
2015-01-26	Joss	NF-PM1	B1=141252
2014-11-10	Joss	NF-PM1	B1=116738
2013-01-07	dbaugh	NF	no factor from 2^62 to 2^63
2011-12-19	markr	NF	no factor from 2^61 to 2^62
2010-11-02	markr	NF-PM1	B1=95000, B2=1971250, E=6
2009-02-13	Sturle Sunde	NF	no factor from 2^60 to 2^61

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