2 804 993 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

2804993

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷⁰

TF target 2⁶³

TF below 2^81 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	12000000
B2 =	112482049680

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	110 / 640

Estimated T-Level: 25.9 ⓘ

Status	Date	User	Residue	Shift
Verified		Dave Wilson	FF69BEC09840EC7A	0
Verified	1999-05-16	Chris Koeberle	FF69BEC09840EC7A	2302735
Verified	2018-09-02	kkmrkkblmbrbk	FF69BEC09840EC7A	1142231

History

Date	User	Type	Result
2024-01-30	mikr	NF-PM1	B1=12000000, B2=112482049680
2023-10-20	Joss	NF-PM1	B1=2635283, B2=5765609850
2023-10-19	Joss	NF-PM1	B1=2635283, B2=2873961090
2023-10-19	Joss	NF-PM1	B1=2635283, B2=1246214970
2023-10-18	Joss	NF-PM1	B1=2635283, B2=432341910
2023-09-19	Joss	NF-PM1	B1=1000000, B2=6396660270
2023-07-28	Joss	NF-PM1	B1=1000000, B2=3091948860
2023-05-16	Joss	NF-PM1	B1=1000000, B2=1464216600
2022-11-23	Architects Cubed	NF	no factor from 2^69 to 2^70
2021-06-07	TJAOI	NF	no factor from 2^68 to 2^69
2020-01-04	masser	NF-PM1	B1=5000000, B2=200000000, E=12
2019-11-13	masser	NF-PM1	B1=3000000, B2=30000000, E=12
2018-12-30	chuenkit	NF	no factor from 2^67 to 2^68
2018-09-02	kkmrkkblmbrbk	C-LL	FF69BEC09840EC7A
2018-04-22	Joss	NF-PM1	B1=2804993, B2=5466706, E=6
2018-04-20	Joss	NF-PM1	B1=2633353
2017-10-24	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-08-04	Joss	NF-PM1	B1=1653353, B2=3306706, E=6
2016-05-08	Numberwang	NF-PM1	B1=15000, B2=135000
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-02-10	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-07	Joss	NF-PM1	B1=1653353
2015-06-25	Joss	NF-PM1	B1=1503049
2015-06-08	Joss	NF-PM1	B1=1366409
2015-05-22	Joss	NF-PM1	B1=1242190
2015-05-07	Joss	NF-PM1	B1=1129264
2015-05-01	Joss	NF-PM1	B1=1026604
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
2015-04-08	Joss	NF-PM1	B1=848434
2015-03-29	Joss	NF-PM1	B1=771304
2015-03-14	Joss	NF-PM1	B1=637442
2015-03-12	Joss	NF-PM1	B1=579493
2015-03-02	Joss	NF-PM1	B1=526812
2015-02-25	Joss	NF-PM1	B1=478920
2015-02-05	Joss	NF-PM1	B1=435382
2015-02-03	Joss	NF-PM1	B1=217691
2015-02-01	Joss	NF-PM1	B1=197901
2015-01-31	Joss	NF-PM1	B1=179910
2015-01-26	Joss	NF-PM1	B1=148687
2014-11-10	Joss	NF-PM1	B1=122882
2013-01-10	dbaugh	NF	no factor from 2^62 to 2^63
2012-03-03	Grant McCracken	NF	no factor from 2^61 to 2^62
2010-11-19	markr	NF-PM1	B1=100000, B2=2075000, E=6
2010-11-12	Joss	NF-PM1	B1=15000
2009-02-14	Sturle Sunde	NF	no factor from 2^60 to 2^61

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