266 449 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

No factors below 2⁶⁶

TF target 2⁴⁴

TF below 2^103 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	111000000
B2 =	4558908444090

ECM

Estimated T-Level: 32.6 ⓘ

Status	Date	User	Residue	Shift
Verified		David Slowinski	6A11	0
Verified		Unknown	6A11	0
Verified		Brian J. Beesley	C00D39BCAE086A11	0
Verified		Eivind Triel	C00D39BCAE086A11	137236
Verified	2001-10-27	Brian J. Beesley	C00D39BCAE086A11	12722

History

Date	User	Type	Result
2023-09-04	masser	NF-PP1	Start=188/53, B1=20000000, B2=1580000000
2023-09-02	masser	NF-PP1	Start=6/5, B1=20000000, B2=1580000000
2022-06-16	Sid & Andy	NF-PM1	B1=111000000, B2=4558908444090
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2021-07-03	George Woltman	NF-PP1	Start=2/7, B1=20000000, B2=1660000000
2021-07-03	George Woltman	NF-PM1	B1=30000000, B2=2490000000
2020-01-03	Gordon Spence	NF	no factor from 2^65 to 2^66
2018-03-20	Gordon Spence	NF	no factor from 2^64 to 2^65
2016-08-17	Joss	NF-PM1	B1=10660000, B2=937168584, E=12
2016-04-14	Joss	NF-PM1	B1=10660000, B2=468584292, E=12
2016-03-29	Joss	NF-PM1	B1=7035600
2016-03-21	Joss	NF-PM1	B1=5863000
2015-12-07	Gordon Spence	NF	no factor from 2^63 to 2^64
2015-12-07	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-08-25	NR	NF	no factor from 2^61 to 2^62
2013-08-27	David Campeau	NF-PM1	B1=5330000, B2=191880000, E=12
2013-07-09	lycorn	NF	no factor from 2^60 to 2^61
2012-02-26	Joss	NF-PM1	B1=2307218
2011-02-15	Joss	NF-PM1	B1=2000000
2009-01-24	Sturle Sunde	NF	no factor from 2^59 to 2^60
2009-01-01	Sturle Sunde	NF	no factor from 2^58 to 2^59

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