3 943 939 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷¹

TF target 2⁶⁴

TF below 2^80 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	20996011
B2 =	76023137190

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	86 / 640

Estimated T-Level: 25.7 ⓘ

Status	Date	User	Residue	Shift
Verified	1998-02-08	Christopher Lund	D53081A982EAFCA6	0
Verified	1999-10-07	Steven L Hensley	D53081A982EAFCA6	1102055

History

Date	User	Type	Result
2023-07-15	Denial140	NF-PM1	B1=20996011, B2=76023137190
2023-02-25	Denial140	NF-PM1	B1=20996011
2022-12-18	Joss	NF-PM1	B1=1000000, B2=479417400
2022-10-08	Joss	NF-PM1	B1=1000000, B2=110728800
2022-05-15	Joss	NF-PM1	B1=500000, B2=110728800
2021-06-02	-Anonymous-	NF	no factor from 2^70 to 2^71
2021-04-30	axn	NF	no factor from 2^69 to 2^70
2020-07-31	TJAOI	NF	no factor from 2^68 to 2^69
2018-09-17	TJAOI	NF	no factor from 2^67 to 2^68
2017-07-20	Joss	NF-PM1	B1=380160, B2=3801600, E=6
2016-12-11	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-05-02	Joss	NF-PM1	B1=190080, B2=3421440
2016-05-01	Joss	NF-PM1	B1=190080, B2=2924836, E=6
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2016-02-13	ramgeis	NF	no factor from 2^65 to 2^66
2015-01-14	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-14	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-11-14	Joss	NF-PM1	B1=86274
2012-02-20	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-09-26	Squeeky_Squirrel	NF-PM1	B1=70000, B2=1190000, E=6
2011-03-17	Grant McCracken	NF	no factor from 2^61 to 2^62
2009-08-01	Carsten Kossendey	NF-PM1	B1=20000, B2=285000
2009-01-06	Architects Cubed	NF	no factor from 2^60 to 2^61

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