88 072 573 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 2⁷⁶

TF target 2⁷⁵

P-1

B1 =	725000
B2 =	14137500

Status	Date	User	Residue	Shift	Type	Base
Verified	2019-11-19	ky0uraku	C0B33C40A5C653B6	72650359	1	3
Verified	2025-02-19	GdS	C0B33C40A5C653B6	0	1	3

History

Date	User	Type	Result
2025-02-20	Ryan Usher	CERT	PRP Certification CERT proof power = 10 Proof certified good
2025-02-19	GdS	C-PRP	C0B33C40A5C653B6 PRP proof power = 10 PRP: Verified Proof certified good
2019-11-19	ky0uraku	C-PRP	C0B33C40A5C653B6 PRP: Verified PRP without proof (not generated)
2018-11-14	Oliver Kruse	NF-PM1	B1=725000, B2=14137500, E=12
2018-06-22	tServo	NF	no factor from 2^75 to 2^76
2018-06-22	tServo	NF	no factor from 2^74 to 2^75
2017-06-18	-Anonymous-	NF	no factor from 2^73 to 2^74
2017-06-18	-Anonymous-	NF	no factor from 2^72 to 2^73
2014-01-25	PascalBieri	NF	no factor from 2^71 to 2^72
2013-06-26	g0b	NF	no factor from 2^70 to 2^71
2012-01-03	wavelet3000	NF	no factor from 2^69 to 2^70
2012-01-03	wavelet3000	NF	no factor from 2^68 to 2^69
2011-05-07	wavelet3000	NF	no factor from 2^67 to 2^68
2011-05-07	wavelet3000	NF	no factor from 2^66 to 2^67
2011-03-10	wavelet3000	NF	no factor from 2^65 to 2^66
2010-11-12	Architects Cubed	NF	no factor from 2^64 to 2^65