2 790 971 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 2^80 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	53028450
B2 =	1284463520340

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	80 / 640

Estimated T-Level: 25.6 ⓘ

Status	Date	User	Residue	Shift
Verified		tom ehlert	8BC0B67DB5C1F4B6	0
Verified	1999-04-23	Bruce Mitchell	8BC0B67DB5C1F4B6	172645
Verified	2018-08-29	kkmrkkblmbrbk	8BC0B67DB5C1F4B6	1029060

History

Date	User	Type	Result
2024-11-21	yuriy_5-1	NF-PM1	B1=53028450, B2=1284463520340
2023-10-20	TJAOI	NF	no factor from 2^69 to 2^70
2023-02-26	Architects Cubed	NF-PM1	B1=5000000, B2=8681331750
2021-07-01	TJAOI	NF	no factor from 2^68 to 2^69
2019-12-15	BigBrother	NF-PM1	B1=3000000, B2=90000000, E=12
2019-02-26	chuenkit	NF	no factor from 2^67 to 2^68
2018-08-29	kkmrkkblmbrbk	C-LL	8BC0B67DB5C1F4B6
2017-10-19	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-07-20	Joss	NF-PM1	B1=400000, B2=4000000, E=6
2016-05-06	Joss	NF-PM1	B1=200000, B2=3600000, E=6
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-02-09	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
2014-11-01	Joss	NF-PM1	B1=122997
2013-01-10	dbaugh	NF	no factor from 2^62 to 2^63
2012-03-05	markr	NF	no factor from 2^61 to 2^62
2010-11-23	markr	NF-PM1	B1=100000, B2=2075000, E=6
2010-11-11	Joss	NF-PM1	B1=15000
2009-02-12	Sturle Sunde	NF	no factor from 2^60 to 2^61

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