26 477 239 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷⁵

TF target 2⁷⁰

P-1

B1 =	285000
B2 =	3776250

Status	Date	User	Residue	Shift	Software
Verified	2004-11-30	Andrew Trost	2F3195451F0D0E12	14752802	Windows,Prime95,v23,(aka WZ1)
Verified	2012-07-06	Dubslow	2F3195451F0D0E12	14877894	Linux 64-bit,Prime95,v27.7,build 2
Verified	2016-08-18	-anonymous-	2F3195451F0D0E12	11329538	Windows 64-bit,Prime95,v26.4,build 1

History

Date	User	Type	Result
2021-10-17	TheJudger	NF	no factor TF: 74-75
2021-09-30	TheJudger	NF	no factor TF: 73-74
2021-08-25	TheJudger	NF	no factor TF: 72-73
2021-08-25	TheJudger	NF	no factor TF: 71-72
2021-04-29	mikr	NF	no factor TF: 70-71
2017-04-13	ramgeis	NF	no factor TF: 69-70
2016-08-18	-anonymous-	C-LL	2F3195451F0D0E12
2012-07-06	Dubslow	C-LL	2F3195451F0D0E12
2012-07-02	Axelsson	NF	no factor TF: 68-69
2012-07-02	Architects Cubed	NF	no factor TF: 67-68
2004-11-30	-anonymous-	C-LL	2F3195451F0D0E12
2004-11-22	-anonymous-	NF-PM1	B1=285000, B2=3776250
2004-08-20	-anonymous-	NF	no factor TF: 1-67
2004-06-04	markr	NF	no factor TF: 1-62