1 753 Exponent Status

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁶⁶

TF target 2⁴⁴

Assignments

Assigned	User	Work Type	Stage	% Done	Updated	Est Complete	Expired
2026-01-06	Mario Tranquillini	ECM	C33S1	75.45 %	2026-01-28	2026-02-01

P-1

B1 =	10000000000000
B2 =	5790124533517544220

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	9201 / 9201
50	44000000	16550 / 16550
55	110000000	40830 / 40830
60	260000000	105362 / 105362
65	800000000	194238 / 194238
70	2400000000	74355 / 350860

Estimated T-Level: 66.1 ⓘ

TF below 2^214 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Software
Verified		Unknown	6C2D	0	Unknown,(aka U)
Verified		George Woltman	A984D3CA0516EC2D	0	Woltman,Prime95,first web release,(aka W4)
Verified		Gord Palameta	A984D3CA0516EC2D	1056	Linux 32-bit,Prime95,v23,(aka WZ2)
Verified	2015-04-11	MadPoo 🙂	A984D3CA0516EC2D	1478	Windows 64-bit,Prime95,v26,(aka We4)

History

Date	User	Type	Result
2025-06-05	ViliamF	NF-PP1	Start=6/5, B1=50000000000, B2=5000000000000
2025-06-02	ViliamF	NF-PP1	Start=2/7, B1=50000000000, B2=5000000000000
2024-08-12	Ethan O'Connor	NF-PM1	B1=10000000000000, B2=9.2316306045655E+18
2024-08-09	Ethan O'Connor	NF-PM1	B1=10000000000000, B2=5790124533517544220
2024-08-07	MooMoo2	NF-PM1	B1=1000000000000, B2=1315858269280805250
2023-08-09	masser	NF-PP1	Start=2/7, B1=5890000000, B2=1054310000000
2023-07-16	masser	NF-PP1	Start=163/67, B1=5890000000, B2=235600000000
2023-06-29	masser	NF-PM1	B1=216000000000, B2=578465311533028920
2021-05-12	ATH	NF-PP1	Start=6/5, B1=1000000000, B2=223000000000
2021-04-27	gLauss	NF-PP1	Start=2/7, B1=100000000, B2=10000000000
2020-12-28	Ruslan Borisov	NF	no factor TF: 65-66
2018-06-06	Andriy Makukha	NF	no factor TF: 64-65
2017-11-18	snme2pm1	NF	no factor TF: 63-64
2016-10-02	James Hintz	NF-PM1	B1=3617913835169, B2=289433106813520, E=12
2016-06-21	snme2pm1	NF	no factor TF: 62-63
2016-02-20	James Hintz	NF-PM1	B1=1996677230704, B2=159734178456320, E=12
2015-07-08	MadPoo 🙂	NF-PM1	B1=2451633292673, B2=10000000000000, E=12
2015-04-11	MadPoo 🙂	C-LL	A984D3CA0516EC2D
2014-07-21	LaurV	NF	no factor TF: 61-62
2014-01-09	Sid & Andy	NF	no factor TF: 60-61
2013-04-02	Le Comte	NF-PM1	B1=100000000000, B2=10000000000000, E=12
2010-12-23	monst	NF	no factor TF: 59-60
2009-06-22	James Hintz	NF-PM1	B1=27500000000, B2=275000000000, E=12
2008-12-06	Matthias Wurtinger	NF-PM1	B1=25000000000, B2=50000000000, E=12
2008-12-05	Matthias Wurtinger	NF-PM1	B1=20000000000, B2=40000000000, E=12
2008-12-04	Matthias Wurtinger	NF-PM1	B1=15000000000, B2=30000000000, E=12
2008-12-01	Matthias Wurtinger	NF-PM1	B1=10000000000, B2=20000000000, E=12
2005-04-02	garyfu	NF	no factor TF: 1-59
2002-12-25	-anonymous-	NF-PM1	B1=4290000000
2002-10-19	Alex Kruppa	NF	no factor TF: 1-57
2002-09-29	Alex Kruppa	NF	no factor TF: 1-57
2002-09-14	-anonymous-	NF-PM1	B1=3221225472, B2=4290000000, E=48
2002-08-03	-anonymous-	NF-PM1	B1=2147483648, B2=4290000000, E=48
2002-05-25	-anonymous-	NF-PM1	B1=1073741824, B2=4290000000
2001-05-20	-anonymous-	NF-PM1	B1=3000000000, B2=4290000000
2001-02-11	-anonymous-	NF-PM1	B1=1000000, B2=100000000
2001-02-11	-anonymous-	NF-PM1	B1=10000, B2=1000000
2000-07-17	-anonymous-	NF	no factor TF: 1-56
2000-01-19	-anonymous-	NF	no factor TF: 54-55
1998-09-13	-anonymous-	NF	no factor TF: 1-54

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