484 397 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁶⁸

TF target 2⁴⁴

TF below 2^97 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	69000000
B2 =	1167485048730

ECM

Estimated T-Level: 30.8 ⓘ

Status	Date	User	Residue	Shift
Verified		David Slowinski	2F04	0
Verified		Peter Marksteiner	D3FDBE6DDC8E6F04	0
Verified		Eivind Triel	D3FDBE6DDC8E6F04	249194
Verified	2001-10-27	Brian J. Beesley	D3FDBE6DDC8E6F04	61292

History

Date	User	Type	Result
2023-10-31	masser	NF-PM1	B1=69000000, B2=1167485048730
2023-10-23	Joss	NF-PM1	B1=5320095, B2=14254790550
2023-06-25	Joss	NF-PM1	B1=1000000, B2=94752908250
2023-01-16	Joss	NF-PM1	B1=1000000, B2=14254790550
2022-12-23	masser	NF-PP1	Start=2/7, B1=16000000, B2=496000000
2022-12-18	masser	NF-PP1	Start=6/5, B1=8000000, B2=216000000
2022-12-11	masser	NF-PP1	Start=163/29, B1=4000000, B2=96000000
2022-05-22	Gordon Spence	NF	no factor from 2^67 to 2^68
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2021-09-29	Yxinity	NF	no factor from 2^66 to 2^67
2018-09-24	BloodERazor	NF	no factor from 2^65 to 2^66
2018-01-11	Gordon Spence	NF	no factor from 2^64 to 2^65
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-11-08	Gordon Spence	NF	no factor from 2^63 to 2^64
2015-11-08	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-07-19	NR	NF	no factor from 2^61 to 2^62
2012-10-07	markr	NF-PM1	B1=20000000, B2=1000000000, E=12
2011-11-11	lycorn	NF	no factor from 2^60 to 2^61
2010-11-22	Rob_Dee	NF-PM1	B1=1000000, B2=2000000, E=6
2010-11-21	Rob_Dee	NF-PM1	B1=500000, B2=1000000

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