41 367 331 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 2⁷⁴

TF target 2⁷²

P-1

B1 =	475000
B2 =	9381250

Status	Date	User	Residue	Shift	Software
Bad	2008-09-16	Kyle Schmidt	401EBE5163C54FF9	20150764	Windows,Prime95,v24 final,(aka Wc1)
Verified	2017-01-30	kdelisle2005	88EAC1739843ADB8	4145417	Windows 64-bit,Prime95,v26,(aka We4)
Verified	2017-02-13	MadPoo 🙂	88EAC1739843ADB8	4684086	Windows 64-bit,Prime95,v26,(aka We4)

History

Date	User	Type	Result
2024-06-14	James Heinrich	NF	no factor TF: 68-69
2020-01-10	-anonymous-	NF	no factor TF: 73-74
2019-06-29	Random GPUs	NF	no factor TF: 72-73
2017-02-13	MadPoo 🙂	C-LL	88EAC1739843ADB8
2017-01-30	kdelisle2005	C-LL	88EAC1739843ADB8
2015-08-23	AirSquirrels	NF	no factor TF: 71-72
2015-01-25	srow7	NF	no factor TF: 70-71
2015-01-24	chalsall	NF	no factor TF: 69-70
2013-12-03	Carsten Kossendey	NF	no factor TF: 68-69
2008-08-26	Kyle Z Schmidt	C-LL	401EBE5163C54FF9
2008-04-24	Kyle Z Schmidt	NF-PM1	B1=475000, B2=9381250
2007-04-07	ANONYMOUS	NF	no factor TF: 1-68