2 893 313 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 2^75 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	10000000
B2 =	13221007800

ECM

Digits	B1	Curves
25	50000	234 / 280

Estimated T-Level: 24.2 ⓘ

Status	Date	User	Residue	Shift
Verified		Ira Machefsky	086F2123F22F8A90	0
Verified	1999-10-15	Aaron Hensell	086F2123F22F8A90	1732810
Verified	2018-09-28	kkmrkkblmbrbk	086F2123F22F8A90	2690977

History

Date	User	Type	Result
2024-03-08	Joss	NF-PM1	B1=10000000, B2=13221007800
2023-10-24	Joss	NF-PM1	B1=2602806, B2=2793841050
2023-10-23	Joss	NF-PM1	B1=2602806, B2=1112322750
2023-10-23	Joss	NF-PM1	B1=2602806, B2=388599120
2023-09-23	Joss	NF-PM1	B1=1000000, B2=6473867400
2023-05-26	TJAOI	NF	no factor from 2^69 to 2^70
2023-05-25	Joss	NF-PM1	B1=1000000, B2=3110807700
2021-04-22	TJAOI	NF	no factor from 2^68 to 2^69
2020-02-11	masser	NF-PM1	B1=5000000, B2=200000000, E=12
2019-10-23	masser	NF-PM1	B1=2900000, B2=29000000, e=12
2019-01-12	chuenkit	NF	no factor from 2^67 to 2^68
2018-09-28	kkmrkkblmbrbk	C-LL	086F2123F22F8A90
2017-11-16	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-10-21	Joss	NF-PM1	B1=597196, B2=5971960, E=6
2017-02-25	Joss	NF-PM1	B1=298598, B2=2985980, E=6
2016-12-14	Joss	NF-PM1	B1=248832
2016-10-27	Joss	NF-PM1	B1=172800
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-02-19	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
2013-01-07	dbaugh	NF	no factor from 2^62 to 2^63
2012-01-07	lycorn	NF	no factor from 2^61 to 2^62
2009-02-13	Sturle Sunde	NF	no factor from 2^60 to 2^61

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