100 428 983 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 2⁷⁶

P-1

B1 =	731000
B2 =	20869000

Status	Date	User	Residue	Shift	Type	Base
Verified	2020-10-21	ky0uraku	645F456479DA7D99	25112343	1	3

History

Date	User	Type	Result
2020-10-21	firejuggler	CERT	PRP Certification CERT proof power = 9 Proof certified good
2020-10-21	ky0uraku	C-PRP	645F456479DA7D99 PRP proof power = 9 PRP: Verified Proof certified good
2020-10-13	ee33t1	NF-PM1	B1=731000, B2=20869000, E=6
2020-08-17	Bill Staffen	NF	no factor from 2^75 to 2^76
2020-08-17	Bill Staffen	NF	no factor from 2^74 to 2^75
2020-03-15	JoDu	NF	no factor from 2^73 to 2^74
2020-03-15	JoDu	NF	no factor from 2^72 to 2^73
2017-03-13	mikr	NF	no factor from 2^71 to 2^72
2014-06-09	PascalBieri	NF	no factor from 2^70 to 2^71
2014-06-06	PascalBieri	NF	no factor from 2^69 to 2^70
2014-03-24	LookAS	NF	no factor from 2^68 to 2^69
2013-08-22	Per Jessen	NF	no factor from 2^67 to 2^68
2011-03-17	Craig Meyers	NF	no factor from 2^66 to 2^67
2011-02-13	Craig Meyers	NF	no factor from 2^65 to 2^66
2010-08-10	OS1	NF	no factor from 2^64 to 2^65
2010-01-19	1997rj7	NF	no factor from 2^63 to 2^64