363 199 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 2^107 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	79000000
B2 =	2190171863880

ECM

Estimated T-Level: 33.8 ⓘ

Status	Date	User	Residue	Shift
Verified		David Slowinski	23F7	0
Verified		Chris Haley	D8C91AC85C30E3F7	0
Verified		Klaus Kastens	D8C91AC85C30E3F7	0
Verified		Eivind Triel	D8C91AC85C30E3F7	299396
Verified	2016-06-01	MadPoo	D8C91AC85C30E3F7	29105

History

Date	User	Type	Result
2023-07-21	JacobZ	NF-PM1	B1=79000000, B2=2190171863880
2023-07-18	Joss	NF-PM1	B1=1545032, B2=77884486680
2023-02-05	Joss	NF-PM1	B1=1000000, B2=25961355420
2023-01-09	masser	NF-PP1	Start=6/5, B1=20000000, B2=620000000
2023-01-04	masser	NF-PP1	Start=91/67, B1=20000000, B2=620000000
2022-12-31	masser	NF-PP1	Start=2/7, B1=20000000, B2=640000000
2022-11-04	Gordon Spence	NF	no factor from 2^67 to 2^68
2022-09-22	LordJulius	NF	no factor from 2^66 to 2^67
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2019-05-07	Gordon Spence	NF	no factor from 2^65 to 2^66
2018-02-22	Gordon Spence	NF	no factor from 2^64 to 2^65
2018-02-14	BloodERazor	NF	no factor from 2^64 to 2^65
2016-12-05	axn	NF-PM1	B1=100000000, B2=4000000000, E=12
2016-11-29	mikr	NF-PM1	B1=60000000, B2=3000000000, E=12
2016-06-01	MadPoo	C-LL	D8C91AC85C30E3F7
2015-12-22	Gordon Spence	NF	no factor from 2^63 to 2^64
2015-12-22	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-08-13	NR	NF	no factor from 2^61 to 2^62
2013-05-05	lycorn	NF	no factor from 2^60 to 2^61
2012-03-13	alpertron	NF-PM1	B1=10000000, B2=200000000, E=12
2012-03-05	Joss	NF-PM1	B1=1544032
2011-08-14	Joss	NF-PM1	B1=1235226
2009-01-26	Sturle Sunde	NF	no factor from 2^59 to 2^60
2008-12-29	Sturle Sunde	NF	no factor from 2^58 to 2^59

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