332 399 153 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Tested as composite (unverified): unconfirmed Lucas-Lehmer test says not-prime

No factors below 2⁸¹

TF target 2⁸¹

P-1

B1 =	2278105
B2 =	45562108

ECM

Digits	B1	Curves
25	50000	0 / 280

Estimated T-Level: 20.0 ⓘ

TF below 2^61 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Software
Unverified	2016-05-09	Sergey Nosov	D0556631C44ED5__	166202243	CUDALucas v2.05.1

History

Date	User	Type	Result
2023-10-18	James Heinrich	NF	no factor TF: 67-68
2016-05-09	Sergey Nosov	C-LL	D0556631C44ED5__
2016-03-06	Sergey Nosov	NF-PM1	B1=2278105, B2=45562108, E=6
2016-02-23	Sergey Nosov	NF	no factor TF: 80-81
2016-02-22	Sergey Nosov	NF	no factor TF: 78-80
2016-02-22	Sergey Nosov	NF	no factor TF: 77-78
2016-02-18	Sergey Nosov	NF	no factor TF: 76-77
2015-01-28	Jacques MOLNE	NF	no factor TF: 75-76
2015-01-26	Jacques MOLNE	NF	no factor TF: 74-75
2015-01-12	Jacques MOLNE	NF	no factor TF: 73-74
2013-01-24	LaurV	NF	no factor TF: 72-73
2011-05-02	Christian Geschwentner	NF	no factor TF: 71-72
2010-09-10	Grant McCracken	NF	no factor TF: 70-71
2009-06-30	unconnected	NF	no factor TF: 69-70
2009-06-30	unconnected	NF	no factor TF: 68-69

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