6 908 507 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

TF

No factors below 2⁷²

TF target 2⁶⁷

P-1

B1 =	3500000
B2 =	9616446840

ECM

Digits	B1	Curves
25	50000	6 / 280

Estimated T-Level: 20.1 ⓘ

Status	Date	User	Residue	Shift
Verified		Kevin D. Quitt	9FA4073A50ACBFAF	2180258
Verified	2001-03-11	Matthew Ashton	9FA4073A50ACBFAF	5376516
Verified	2002-03-31	Björn Hoffmann	9FA4073A50ACBFAF	4729175

History

Date	User	Type	Result
2023-06-27	Tha	NF-PM1	B1=3500000, B2=9616446840
2021-09-26	SRBase	NF	no factor from 2^71 to 2^72
2019-07-28	takahashi	NF-PM1	B1=2500000, B2=50000000
2016-01-06	ramgeis	NF	no factor from 2^70 to 2^71
2014-03-28	ramgeis	NF	no factor from 2^69 to 2^70
2014-03-28	ramgeis	NF	no factor from 2^68 to 2^69
2014-03-28	ramgeis	NF	no factor from 2^67 to 2^68
2014-03-28	ramgeis	NF	no factor from 2^66 to 2^67
2014-01-17	lycorn	NF	no factor from 2^65 to 2^66
2008-08-18	Richard B. Woods	NF	no factor to 2^65