66 209 933 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

TF

No factors below 2⁷⁵

TF target 2⁷⁴

P-1

B1 =	302000
B2 =	25501938

Status	Date	User	Residue	Shift
Unverified	2014-04-18	-Anonymous-	FD9765920ED84F__	44547071

Status	Date	User	Residue	Shift	Type	Base
Verified	2022-10-01	Kriesel	B7BEEA75FF470C90	62423714	1	3

History

Date	User	Type	Result
2022-10-02	curtisc	CERT	PRP Certification CERT proof power = 9 Proof certified good
2022-10-01	Kriesel	C-PRP	B7BEEA75FF470C90 PRP proof power = 9 PRP: Verified Proof certified good
2022-08-31	Kriesel	NF-PM1	B1=302000, B2=25501938
2021-10-06	Aerow	NF	no factor from 2^74 to 2^75
2014-04-18	-Anonymous-	C-LL	FD9765920ED84F__
2014-03-22	-Anonymous-	NF-PM1	B1=695000
2014-03-17	Bill Staffen	NF	no factor from 2^73 to 2^74
2014-03-17	Bill Staffen	NF	no factor from 2^72 to 2^73
2014-03-17	Bill Staffen	NF	no factor from 2^71 to 2^72
2013-04-25	SMoffat	NF	no factor from 2^70 to 2^71
2013-04-07	Architects Cubed	NF	no factor from 2^69 to 2^70
2009-12-11	-Anonymous-	NF	no factor from 2^68 to 2^69
2009-11-30	Nathan Edington	NF	no factor from 2^67 to 2^68
2009-11-29	hete	NF	no factor from 2^66 to 2^67
2009-11-28	hete	NF	no factor from 2^65 to 2^66
2009-11-14	Sturle Sunde	NF	no factor from 2^64 to 2^65
2009-04-05	1997rj7	NF	no factor to 2^64