2 093 807 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁶⁹

TF target 2⁶²

TF below 2^82 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	14200000
B2 =	45585971970

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	167 / 640

Estimated T-Level: 26.3 ⓘ

Status	Date	User	Residue	Shift
Verified		John Lloyd	B2C3E0858DCC809D	0
Verified	1999-02-07	Kent Lee	B2C3E0858DCC809D	1537614
Verified	2017-06-12	kkmrkkblmbrbk	B2C3E0858DCC809D	281910

History

Date	User	Type	Result
2023-07-29	Sid & Andy	NF-PM1	B1=14200000, B2=45585971970
2023-05-23	Joss	NF-PM1	B1=1000000, B2=4261742100
2023-03-04	Joss	NF-PM1	B1=1000000, B2=1819067250
2023-01-20	Joss	NF-PM1	B1=1000000, B2=637206570
2021-07-29	TJAOI	NF	no factor from 2^68 to 2^69
2019-04-01	chuenkit	NF	no factor from 2^67 to 2^68
2017-06-12	kkmrkkblmbrbk	C-LL	B2C3E0858DCC809D
2017-05-19	mikr	NF-PM1	B1=2500000, B2=125000000, E=12
2016-11-09	Joss	NF-PM1	B1=268329
2016-11-05	Joss	NF-PM1	B1=223608
2016-09-21	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-07-27	Joss	NF-PM1	B1=186340, B2=6300000, E=12
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-11-02	ramgeis	NF	no factor from 2^65 to 2^66
2015-04-10	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-10	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-09-03	ramgeis	NF	no factor from 2^62 to 2^63
2012-03-23	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-19	James Heinrich	NF-PM1	B1=140000, B2=3150000, E=6
2011-01-09	Joss	NF-PM1	B1=50000
2010-12-28	Joss	NF-PM1	B1=30000
2009-07-27	USAFSS	NF-PM1	B1=20000, B2=260000
2009-01-03	Sturle Sunde	NF	no factor from 2^60 to 2^61

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