736 063 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 2^86 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	7500000
B2 =	1103176824750

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	303 / 640

Estimated T-Level: 27.4 ⓘ

Status	Date	User	Residue	Shift
Verified		David Slowinski	273D	0
Verified		Roger Gariépy	CC4388C1ACE5673D	0
Verified		Brian J. Beesley	CC4388C1ACE5673D	0
Verified	2015-04-11	MadPoo	CC4388C1ACE5673D	425111

Assigned

Assigned	User	Work Type	Stage	% Done	Updated
2025-04-07	Kamil Gorski	factor P-1 small	S2	0.14 %	2025-05-09
2025-04-03	Plame	factor ECM small		0.00 %	2025-04-03
2025-03-16	-Anonymous-	factor ECM small		0.00 %	2025-03-16

History

Date	User	Type	Result
2024-04-21	Joss	NF-PM1	B1=10000000, B2=14005661670
2023-05-05	masser	NF-PP1	Start=6/5, B1=7000000, B2=336000000
2023-04-11	masser	NF-PP1	Start=171/47, B1=7000000, B2=322000000
2023-04-08	masser	NF-PP1	Start=2/7, B1=7000000, B2=336000000
2022-04-16	lycorn	NF-PM1	B1=7500000, B2=1103176824750
2022-03-26	Gordon Spence	NF	no factor from 2^67 to 2^68
2020-05-10	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-09-09	Smok_bmv	NF	no factor from 2^65 to 2^66
2016-04-16	lycorn	NF	no factor from 2^64 to 2^65
2015-11-24	Sid & Andy	NF-PM1	B1=7360630, B2=220818900, E=12
2015-10-17	Gordon Spence	NF	no factor from 2^63 to 2^64
2015-10-17	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-04-11	MadPoo	C-LL	CC4388C1ACE5673D
2015-03-03	NR	NF	no factor from 2^61 to 2^62
2013-10-29	David Campeau	NF-PM1	B1=1485000, B2=49005000, E=12
2012-03-29	Joss	NF-PM1	B1=1482891
2011-10-15	Joss	NF-PM1	B1=988594
2011-08-24	Joss	NF-PM1	B1=494297
2011-07-10	Joss	NF-PM1	B1=296578
2010-07-03	Architects Cubed	NF	no factor from 2^60 to 2^61
2008-10-11	Sturle Sunde	NF	no factor from 2^59 to 2^60
2008-10-11	Sturle Sunde	NF	no factor from 2^58 to 2^59

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