2 994 539 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 2^80 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	10000000
B2 =	19233341400

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	68 / 640

Estimated T-Level: 25.5 ⓘ

Status	Date	User	Residue	Shift
Verified	1998-03-23	Marco Voerman	D45D4ECDF24EB97E	0
Verified	1999-07-04	Kent Lee	D45D4ECDF24EB97E	1058013
Verified	2018-10-23	kkmrkkblmbrbk	D45D4ECDF24EB97E	610210

History

Date	User	Type	Result
2023-10-26	mikr	NF-PM1	B1=10000000, B2=19233341400
2023-10-23	Joss	NF-PM1	B1=2567249, B2=2644922280
2023-09-29	Joss	NF-PM1	B1=1000000, B2=7441343910
2023-09-13	Joss	NF-PM1	B1=1000000, B2=3707293590
2023-06-03	Joss	NF-PM1	B1=1000000, B2=1840268430
2023-02-27	TJAOI	NF	no factor from 2^69 to 2^70
2023-02-21	Joss	NF-PM1	B1=1000000, B2=284427990
2021-04-15	TJAOI	NF	no factor from 2^68 to 2^69
2019-11-02	BigBrother	NF-PM1	B1=3000000, B2=90000000, E=12
2018-12-30	chuenkit	NF	no factor from 2^67 to 2^68
2018-10-23	kkmrkkblmbrbk	C-LL	D45D4ECDF24EB97E
2017-12-07	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-03-24	Joss	NF-PM1	B1=353341, B2=3533410, E=6
2017-02-25	Joss	NF-PM1	B1=294451, B2=2944510, E=6
2016-12-23	Joss	NF-PM1	B1=204480
2016-12-15	Joss	NF-PM1	B1=170400
2016-08-21	Joss	NF-PM1	B1=142000, B2=4785000, E=6
2016-02-24	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-02	lycorn	NF	no factor from 2^64 to 2^65
2015-02-02	lycorn	NF	no factor from 2^63 to 2^64
2013-01-07	dbaugh	NF	no factor from 2^62 to 2^63
2011-11-24	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2010-10-21	markr	NF-PM1	B1=110000, B2=2392500, E=6
2009-02-13	Sturle Sunde	NF	no factor from 2^60 to 2^61

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