6 965 549 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with Lucas-Lehmer test

TF

No factors below 2⁷²

TF target 2⁶⁷

P-1

B1 =	3500000
B2 =	9616446840

ECM

Digits	B1	Curves
25	50000	9 / 280

Estimated T-Level: 20.2 ⓘ

Status	Date	User	Residue	Shift
Verified		Kevin D. Quitt	AB2E167B2B2C0906	427059
Verified	2001-05-13	Rick Adams	AB2E167B2B2C0906	5788820
Verified	2001-11-14	chris clark	AB2E167B2B2C0906	2603494
Verified	2002-08-24	George Edenfield	AB2E167B2B2C0906	3589521

History

Date	User	Type	Result
2023-09-03	Tha	NF-PM1	B1=3500000, B2=9616446840
2021-11-05	Seth_Tr	NF-PM1	B1=2000000, B2=58000000, E=12
2021-09-25	SRBase	NF	no factor from 2^71 to 2^72
2016-01-06	ramgeis	NF	no factor from 2^70 to 2^71
2014-03-30	ramgeis	NF	no factor from 2^69 to 2^70
2014-03-30	ramgeis	NF	no factor from 2^68 to 2^69
2014-03-30	ramgeis	NF	no factor from 2^67 to 2^68
2014-03-30	ramgeis	NF	no factor from 2^66 to 2^67
2014-01-17	lycorn	NF	no factor from 2^65 to 2^66
2013-08-05	Nesowa	NF-PM1	B1=435000, B2=11310000, E=12