43 389 629 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 2⁷⁶

TF target 2⁷²

P-1

B1 =	495000
B2 =	12870000

Status	Date	User	Residue	Shift	Software
Verified	2010-10-29	Kyle Z Schmidt	F7B9D5D32D790A61	30131606	Windows 64-bit,Prime95,v25.11,build 2
Verified	2017-11-03	kdelisle2005	F7B9D5D32D790A61	461693	Windows,Prime95,v26,(aka We1)

History

Date	User	Type	Result
2021-03-05	-anonymous-	NF	no factor TF: 75-76
2021-03-03	-anonymous-	NF	no factor TF: 74-75
2019-12-31	-anonymous-	NF	no factor TF: 73-74
2019-09-30	-anonymous-	NF	no factor TF: 72-73
2017-11-03	kdelisle2005	C-LL	F7B9D5D32D790A61
2015-03-19	Gordon Spence	NF	no factor TF: 71-72
2015-03-19	Gordon Spence	NF	no factor TF: 70-71
2015-03-19	Gordon Spence	NF	no factor TF: 69-70
2010-10-29	Kyle Z Schmidt	C-LL	F7B9D5D32D790A61
2010-08-31	Kyle Z Schmidt	NF-PM1	B1=495000, B2=12870000, E=6
2008-05-21	-anonymous-	NF	no factor TF: 1-69
2007-08-14	Team_Bundu	NF	no factor TF: 63-64
2007-08-14	Team_Bundu	NF	no factor TF: 66-67
2007-08-14	Team_Bundu	NF	no factor TF: 67-68
2007-08-14	Team_Bundu	NF	no factor TF: 64-65
2007-08-14	Team_Bundu	NF	no factor TF: 65-66