2 815 403 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷⁰

TF target 2⁶³

TF below 2^74 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	10000000
B2 =	10292863350

ECM

Digits	B1	Curves
25	50000	216 / 280

Estimated T-Level: 23.9 ⓘ

Status	Date	User	Residue	Shift
Verified		Randy Given	E6B550EA95267A1F	0
Verified	1999-05-09	Jayson Burkel	E6B550EA95267A1F	2752047
Verified	2018-09-05	kkmrkkblmbrbk	E6B550EA95267A1F	1816034

History

Date	User	Type	Result
2023-10-16	Joss	NF-PM1	B1=10000000, B2=10292863350
2023-10-13	Joss	NF-PM1	B1=10000000, B2=432341910
2023-09-25	Joss	NF-PM1	B1=1000000, B2=6450381630
2023-08-04	Denial140	NF-PM1	B1=10000000
2023-06-05	Joss	NF-PM1	B1=1000000, B2=3145642500
2023-02-27	Architects Cubed	NF	no factor from 2^69 to 2^70
2023-02-10	Joss	NF-PM1	B1=1000000, B2=432341910
2021-05-27	TJAOI	NF	no factor from 2^68 to 2^69
2020-01-15	masser	NF-PM1	B1=5000000, B2=200000000, E=12
2019-09-28	masser	NF-PM1	B1=2815403, B2=28154030, E=12
2018-12-31	chuenkit	NF	no factor from 2^67 to 2^68
2018-09-05	kkmrkkblmbrbk	C-LL	E6B550EA95267A1F
2017-10-24	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-08-04	Joss	NF-PM1	B1=400000, B2=4000000, E=6
2016-05-12	Joss	NF-PM1	B1=200000, B2=3600000, E=6
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-02-12	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
2012-02-20	markr	NF	no factor from 2^61 to 2^62
2010-11-16	markr	NF-PM1	B1=100000, B2=2100000, E=6
2010-11-13	Joss	NF-PM1	B1=15000
2009-02-13	Sturle Sunde	NF	no factor from 2^60 to 2^61

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