3 590 623 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 =	11000000
B2 =	20083733670

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	60 / 640

Estimated T-Level: 25.5 ⓘ

Status	Date	User	Residue	Shift
Verified	1998-04-21	Lapo Luchini	B42C8F6EA49DDFF3	0
Verified	1999-07-26	MSR Cambridge	B42C8F6EA49DDFF3	922707

History

Date	User	Type	Result
2025-10-06	Joss	NF-PM1	B1=11000000, B2=20083733670
2025-10-06	Joss	NF-PP1	Start=2/7, B1=2000000, B2=101000000
2025-03-03	Joss	NF-PM1	B1=11000000, B2=10027887870
2022-11-11	mikr	NF-PM1	B1=6000000, B2=7731126942
2022-10-30	Joss	NF-PM1	B1=1000000, B2=130364850
2022-05-12	Joss	NF-PM1	B1=500000, B2=130364850
2021-11-14	ArtyomP	NF-PP1	Start=6/5, B1=50000, B2=2500000
2021-11-14	ArtyomP	NF-PP1	Start=2/7, B1=50000, B2=2500000
2021-03-17	-Anonymous-	NF	no factor from 2^70 to 2^71
2021-03-17	-Anonymous-	NF	no factor from 2^69 to 2^70
2020-12-17	axn	NF	no factor from 2^68 to 2^69
2018-08-20	TJAOI	NF	no factor from 2^67 to 2^68
2017-01-21	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-05-29	Squeeky_Squirrel	NF-PM1	B1=225000, B2=6581250, E=12
2016-02-25	ramgeis	NF	no factor from 2^65 to 2^66
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-02-07	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-07	VictordeHollander	NF	no factor from 2^63 to 2^64
2012-07-02	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-12-30	Squeeky_Squirrel	NF-PM1	B1=85000, B2=1593750, E=6
2011-06-13	markr	NF	no factor from 2^61 to 2^62
2009-07-10	Carsten Kossendey	NF-PM1	B1=20000, B2=245000
2009-03-14	S485122	NF	no factor from 2^60 to 2^61

Username
Password