26 539 633 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	2005-05-12	Imad R. Faiad	1973D79408B83A10	22027263	Windows,Prime95,v23,(aka WZ1)
Verified	2011-02-24	Reed_Young	1973D79408B83A10	16724974	Linux 64-bit,Prime95,v25.9,build 4

History

Date	User	Type	Result
2021-10-17	TheJudger	NF	no factor TF: 74-75
2021-09-26	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
2021-05-03	mikr	NF	no factor TF: 70-71
2018-05-25	VictordeHollander	NF	no factor TF: 69-70
2018-03-20	VictordeHollander	NF	no factor TF: 68-69
2016-12-08	NR	NF	no factor TF: 67-68
2011-02-24	Reed_Young	C-LL	1973D79408B83A10
2005-05-12	-anonymous-	C-LL	1973D79408B83A10
2005-04-11	-anonymous-	NF-PM1	B1=285000, B2=3776250
2004-10-10	S207114	NF	no factor TF: 1-67
2004-08-20	S207114	NF	no factor TF: 1-67