3 290 107 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 2^78 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	8500000
B2 =	21881370420

ECM

Digits	B1	Curves
25	50000	272 / 280

Estimated T-Level: 24.9 ⓘ

Status	Date	User	Residue	Shift
Verified		Dax Prather	2037C2EB9BA1D223	0
Verified		Sturle Sunde	2037C2EB9BA1D223	0
Verified	2015-11-14	MadPoo	2037C2EB9BA1D223	979197

History

Date	User	Type	Result
2025-06-26	Architects Cubed	NF	no factor from 2^70 to 2^71
2023-06-18	Sid & Andy	NF-PM1	B1=8500000, B2=21881370420
2023-06-16	Joss	NF-PM1	B1=1000000, B2=1822534560
2022-10-30	Joss	NF-PM1	B1=1000000, B2=265074810
2022-09-13	Joss	NF-PM1	B1=1000000, B2=118249950
2021-12-09	TJAOI	NF	no factor from 2^69 to 2^70
2021-07-30	MadPoo	NF	no factor from 2^68 to 2^69
2020-01-13	BigBrother	NF-PM1	B1=3000000, B2=90000000, E=12
2018-11-12	TJAOI	NF	no factor from 2^67 to 2^68
2017-04-07	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-02-18	Joss	NF-PM1	B1=238464, B2=2384640, E=6
2017-02-04	Joss	NF-PM1	B1=198720
2017-01-29	Joss	NF-PM1	B1=165600
2017-01-11	Joss	NF-PM1	B1=138000
2015-11-14	MadPoo	C-LL	2037C2EB9BA1D223
2015-06-29	Tha	NF	no factor from 2^65 to 2^66
2013-09-06	Squeeky_Squirrel	NF-PM1	B1=115000, B2=2645000, E=6
2012-12-10	lycorn	NF	no factor from 2^62 to 2^65
2011-09-30	markr	NF	no factor to 2^62
2011-09-25	USAFSS	NF-PM1	B1=60000, B2=1065000, E=6
2009-07-10	Carsten Kossendey	NF-PM1	B1=15000, B2=191250
2009-04-01	S485122	NF	no factor from 2^60 to 2^61

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