332 362 661 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 =	1565000
B2 =	354419940

Status	Date	User	Residue	Shift	Software
Unverified	2016-11-22	Dane McRae	EB7768B27C0181__	11556	CUDALucas v2.05.1

History

Date	User	Type	Result
2023-10-18	James Heinrich	NF	no factor TF: 67-68
2023-05-07	Mark Rose	NF-PM1	B1=1565000, B2=354419940
2023-02-06	Mark Rose	NF	no factor TF: 80-81
2023-02-06	Mark Rose	NF	no factor TF: 79-80
2022-12-25	Mark Rose	NF	no factor TF: 78-79
2021-06-08	Jon Pace	NF	no factor TF: 77-78
2016-12-09	Grant McCracken	NF	no factor TF: 76-77
2016-11-22	Dane McRae	C-LL	EB7768B27C0181__
2011-05-15	Christian Geschwentner	NF	no factor TF: 75-76
2011-05-06	vats09	NF	no factor TF: 72-75
2011-04-23	Christian Geschwentner	NF	no factor TF: 71-72
2010-12-05	Grant McCracken	NF	no factor TF: 70-71
2010-09-29	Grant McCracken	NF	no factor TF: 69-70
2010-01-23	Grant McCracken	NF	no factor TF: 68-69