248 293 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 =	263000000
B2 =	3031381022670

ECM

Estimated T-Level: 32.5 ⓘ

Status	Date	User	Residue	Shift
Verified		David Slowinski	4536	0
Verified		Unknown	4536	0
Verified		Ken Kiefer	0FF7C0F904DF4536	0
Verified		Brian J. Beesley	0FF7C0F904DF4536	0
Verified		Eivind Triel	0FF7C0F904DF4536	187880
Verified	2016-06-01	MadPoo	0FF7C0F904DF4536	22585

Assigned

Assigned	User	Work Type	Stage	% Done	Updated	Expired
2024-03-01	-Anonymous-	factor ECM small		0.00 %	2024-03-14

History

Date	User	Type	Result
2023-02-11	masser	NF-PP1	Start=6/5, B1=30000000, B2=990000000
2023-02-05	masser	NF-PP1	Start=2/7, B1=30000000, B2=990000000
2023-02-05	masser	NF-PP1	Start=179/59, B1=30000000, B2=960000000
2022-05-19	Sid & Andy	NF-PM1	B1=263000000, B2=3031381022670
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2021-12-15	Seth_Tr	NF-PM1	B1=120000000, B2=59906336490
2021-12-04	Seth_Tr	NF-PM1	B1=40000000, B2=7618731120
2019-12-31	Gordon Spence	NF	no factor from 2^65 to 2^66
2018-03-12	Gordon Spence	NF	no factor from 2^64 to 2^65
2016-06-01	MadPoo	C-LL	0FF7C0F904DF4536
2016-05-13	Numberwang	NF-PM1	B1=2776, B2=69400
2016-02-23	Mark Rose	NF	no factor from 2^57 to 2^58
2016-01-25	Gordon Spence	NF	no factor from 2^63 to 2^64
2016-01-25	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-08-09	snme2pm1	NF	no factor from 2^61 to 2^62
2014-12-24	Denial140	NF-PM1	B1=10000000, B2=250000000, E=12
2013-10-13	David Campeau	NF-PM1	B1=2575000, B2=74675000, E=12
2013-07-18	lycorn	NF	no factor from 2^60 to 2^61
2012-02-26	Joss	NF-PM1	B1=2528302
2011-07-24	Joss	NF-PM1	B1=2022642
2011-02-07	Joss	NF-PM1	B1=2000000
2009-01-26	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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