72 059 543 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with PRP test

TF

No factors below 2⁷⁵

TF target 2⁷⁴

P-1

B1 =	665000
B2 =	13965000

Status	Date	User	Residue	Shift
Unverified	2017-05-01	basey	C280C417C69D77__	25534098

Status	Date	User	Residue	Shift	Type	Base
Verified	2024-10-21	Luke Durant	450145D130894B1C	0	1	3

History

Date	User	Type	Result
2024-10-21	Oliver Kruse	CERT	PRP Certification CERT proof power = 9 Proof certified good
2024-10-21	Luke Durant	C-PRP	450145D130894B1C PRP proof power = 9 PRP: Verified Proof certified good
2017-05-01	basey	C-LL	C280C417C69D77__
2016-05-29	-Anonymous-	NF	no factor from 2^74 to 2^75
2014-08-10	Filen	NF-PM1	B1=665000, B2=13965000, E=12
2014-07-06	NickOfTime	NF	no factor from 2^73 to 2^74
2014-07-06	NickOfTime	NF	no factor from 2^72 to 2^73
2014-07-01	jondi_hanluc	NF	no factor from 2^71 to 2^72
2013-04-13	SMoffat	NF	no factor from 2^70 to 2^71
2013-01-05	RMAC9.5	NF	no factor to 2^70
2010-09-26	Perendie	NF	no factor from 2^68 to 2^69
2010-09-21	symallad	NF	no factor from 2^67 to 2^68
2010-07-19	GrunwalderGIMP	NF	no factor from 2^66 to 2^67
2010-07-19	Gnorfe	NF	no factor from 2^65 to 2^66
2010-05-12	Bassam Abdul-Baki	NF	no factor from 2^64 to 2^65
2008-09-19	Wojciech Florek	NF	no factor to 2^64