3 548 381 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷²

TF target 2⁶⁴

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

P-1

B1 =	14516190
B2 =	17723736030

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	89 / 640

Estimated T-Level: 25.7 ⓘ

Status	Date	User	Residue	Shift
Verified	1999-07-27	Ola Svallmark	2DDF0F208D9E8BC5	767805
Verified	2000-07-17	Paul Heuwinkel	2DDF0F208D9E8BC5	0

History

Date	User	Type	Result
2025-02-16	Joss	NF-PM1	B1=14516190, B2=17723736030
2022-10-30	Joss	NF-PM1	B1=1000000, B2=130364850
2022-06-10	mikr	NF-PM1	B1=6000000, B2=7698634020
2022-04-29	Joss	NF-PM1	B1=500000, B2=130364850
2021-10-06	ArtyomP	NF-PP1	Start=6/5, B1=50000, B2=2500000
2021-10-06	ArtyomP	NF-PP1	Start=2/7, B1=50000, B2=2500000
2021-03-19	-Anonymous-	NF	no factor from 2^71 to 2^72
2021-03-18	-Anonymous-	NF	no factor from 2^70 to 2^71
2021-03-18	-Anonymous-	NF	no factor from 2^69 to 2^70
2021-01-24	axn	NF	no factor from 2^68 to 2^69
2018-09-10	TJAOI	NF	no factor from 2^67 to 2^68
2017-01-16	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-03-03	ramgeis	NF	no factor from 2^65 to 2^66
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-12-12	HBendtz	NF-PM1	B1=500000, B2=12000000, e=12
2015-01-27	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-27	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-11-17	Joss	NF-PM1	B1=96176
2014-08-11	-Anonymous-	NF-PM1	B1=78088
2012-06-20	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-12-01	USAFSS	NF-PM1	B1=60000, B2=990000, E=6
2011-06-24	markr	NF	no factor from 2^61 to 2^62
2009-07-07	Carsten Kossendey	NF-PM1	B1=20000, B2=245000
2009-03-17	S485122	NF	no factor from 2^60 to 2^61

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