2 133 277 Exponent Status

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷¹

TF target 2⁶²

P-1

B1 =	10000000
B2 =	31123971060

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	457 / 640

Estimated T-Level: 28.6 ⓘ

TF below 2^90 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Software
Verified		Herb Savage	9F7A4D2B2AFB5DAD	0	Windows,Prime95,v13,(aka WP1)
Verified	1999-02-07	Brian Doherty	9F7A4D2B2AFB5DAD	329033	Windows,Prime95,v17,NT service,(aka WT5)
Verified	2018-04-06	kkmrkkblmbrbk	9F7A4D2B2AFB5DAD	487427	Windows 64-bit,Prime95,v29.4,build 5

History

Date	User	Type	Result
2025-06-18	Joss	NF-PM1	B1=10000000, B2=31123971060
2025-02-06	Joss	NF-PM1	B1=10000000, B2=21063680820
2025-02-06	Joss	NF-PM1	B1=10000000, B2=10374622440
2024-01-27	Joss	NF-PM1	B1=5880454, B2=24204824280
2024-01-26	Joss	NF-PM1	B1=5880454, B2=11966409000
2024-01-02	Numberwang	NF-PM1	B1=210000, B2=1025551800
2023-12-10	Joss	NF-PM1	B1=2940228, B2=6378884820
2023-11-08	Joss	NF-PM1	B1=2940227, B2=2961609420
2023-07-30	Joss	NF-PM1	B1=1000000, B2=48817657980
2023-07-22	Joss	NF-PM1	B1=1000000, B2=24340827420
2023-07-21	Joss	NF-PM1	B1=1000000, B2=12102412140
2023-07-20	Joss	NF-PM1	B1=1000000, B2=5983204500
2021-05-18	ViliamF	NF-PP1	Start=6/5, B1=50000000, B2=6050000000
2021-05-14	ViliamF	NF-PP1	Start=2/7, B1=50000000, B2=6150000000
2021-05-13	ViliamF	NF-PM1	B1=50000000, B2=2500000000
2021-05-13	ViliamF	NF	no factor TF: 70-71
2021-05-13	ViliamF	NF	no factor TF: 69-70
2021-05-13	ViliamF	NF	no factor TF: 68-69
2019-04-29	TJAOI	NF	no factor TF: 67-68
2018-04-06	kkmrkkblmbrbk	C-LL	9F7A4D2B2AFB5DAD
2017-09-30	mikr	NF-PM1	B1=2500000, B2=125000000, E=12
2017-09-13	Joss	NF-PM1	B1=504000, B2=5040000, E=6
2017-08-30	Joss	NF-PM1	B1=420000, B2=4200000, E=6
2016-10-29	Gordon Spence	NF	no factor TF: 66-67
2016-06-29	Joss	NF-PM1	B1=210000, B2=6090000, E=12
2016-02-23	Mark Rose	NF	no factor TF: 58-60
2015-12-27	ramgeis	NF	no factor TF: 65-66
2015-03-15	VictordeHollander	NF	no factor TF: 64-65
2015-03-15	VictordeHollander	NF	no factor TF: 63-64
2013-09-07	ramgeis	NF	no factor TF: 62-63
2012-04-15	Sebastian Hornbostel	NF	no factor TF: 61-62
2011-01-23	James Heinrich	NF-PM1	B1=140000, B2=3045000, E=6
2011-01-12	Joss	NF-PM1	B1=50000
2009-01-05	Sturle Sunde	NF	no factor TF: 60-61
1999-02-07	-anonymous-	C-LL	9F7A4D2B2AFB5DAD
1999-01-29	-anonymous-	NF	no factor TF: 1-58

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