332 247 193 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 =	2920000
B2 =	67890000

Status	Date	User	Residue	Shift	Software
Unverified	2019-12-16	gidden	6C421C911B39C8__	0	Mlucas E18.0

History

Date	User	Type	Result
2023-10-18	James Heinrich	NF	no factor TF: 67-68
2023-02-18	Mark Rose	NF	no factor TF: 80-81
2023-02-18	Mark Rose	NF	no factor TF: 79-80
2023-02-18	Mark Rose	NF	no factor TF: 78-79
2019-12-16	gidden	C-LL	6C421C911B39C8__
2016-12-21	??? ??? ???	NF-PM1	B1=2920000, B2=67890000
2013-11-04	electron1897	NF	no factor TF: 77-78
2013-11-04	electron1897	NF	no factor TF: 76-77
2013-11-04	electron1897	NF	no factor TF: 75-76
2013-05-22	kracker	NF	no factor TF: 74-75
2011-08-23	Team_Inspector	NF	no factor TF: 73-74
2011-07-21	Team_Inspector	NF	no factor TF: 72-73
2011-04-24	Christian Geschwentner	NF	no factor TF: 71-72
2009-04-26	Team_Inspector	NF	no factor TF: 70-71
2009-03-21	Team_Inspector	NF	no factor TF: 69-70
2009-02-19	Team_Inspector	NF	no factor TF: 68-69