2 915 431 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

No factors below 2⁷⁰

TF target 2⁶³

TF below 2^72 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	10000000
B2 =	16475386200

ECM

Digits	B1	Curves
25	50000	180 / 280

Estimated T-Level: 23.2 ⓘ

Status	Date	User	Residue	Shift
Verified		Dax Prather	279E1B33D9DEB2BD	0
Verified	1998-08-16	Alan Vidmar	279E1B33D9DEB2BD	0
Verified	1999-05-16	Brian Doherty	279E1B33D9DEB2BD	2467184

History

Date	User	Type	Result
2023-12-21	mikr	NF-PM1	B1=10000000, B2=16475386200
2023-10-29	Joss	NF-PM1	B1=2594889, B2=5203988790
2023-10-19	Joss	NF-PM1	B1=2594889, B2=3648134490
2023-10-19	Joss	NF-PM1	B1=2594889, B2=1781109330
2023-10-19	Joss	NF-PM1	B1=2594889, B2=847615230
2023-10-18	Joss	NF-PM1	B1=2594889, B2=297802890
2023-09-17	Joss	NF-PM1	B1=1000000, B2=6034528500
2023-05-26	Joss	NF-PM1	B1=1000000, B2=2922819900
2023-05-26	TJAOI	NF	no factor from 2^69 to 2^70
2021-05-31	TJAOI	NF	no factor from 2^68 to 2^69
2020-03-30	masser	NF-PM1	B1=5000000, B2=200000000, E=12
2018-12-18	chuenkit	NF	no factor from 2^67 to 2^68
2017-11-19	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
2016-02-22	ramgeis	NF	no factor from 2^65 to 2^66
2015-04-25	VictordeHollander	NF-PM1	B1=1000000, B2=20000000, E=12
2015-04-25	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-25	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-07	dbaugh	NF	no factor from 2^62 to 2^63
2011-12-20	Grant McCracken	NF	no factor from 2^61 to 2^62
2011-01-25	markr	NF-PM1	B1=105000, B2=2283750, E=6
2010-12-24	Joss	NF-PM1	B1=20000
2009-07-03	Carsten Kossendey	NF-PM1	B1=15000, B2=168750
2009-02-12	Sturle Sunde	NF	no factor from 2^60 to 2^61

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