108 287 563 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 =	923000
B2 =	53355000

Status	Date	User	Residue	Shift	Type	Base
Verified	2022-01-07	Ben Delo	9428FE30B0D88C57	82299406	1	3

History

Date	User	Type	Result
2022-01-07	ehustvedt	CERT	PRP Certification CERT proof power = 8 Proof certified good
2022-01-07	Ben Delo	C-PRP	9428FE30B0D88C57 PRP proof power = 8 PRP: Verified Proof certified good
2022-01-05	Ben Delo	NF-PM1	B1=923000, B2=53355000
2021-04-18	TheJudger	NF	no factor from 2^75 to 2^76
2021-04-18	TheJudger	NF	no factor from 2^74 to 2^75
2019-11-08	Niels_Mache_Nextcloud	NF	no factor from 2^73 to 2^74
2019-11-08	Niels_Mache_Nextcloud	NF	no factor from 2^72 to 2^73
2015-02-02	SMoffat	NF	no factor from 2^71 to 2^72
2013-10-01	processinfo	NF	no factor from 2^70 to 2^71
2013-10-01	processinfo	NF	no factor from 2^69 to 2^70
2013-10-01	processinfo	NF	no factor from 2^68 to 2^69
2013-10-01	processinfo	NF	no factor from 2^66 to 2^68
2012-05-23	omiXorp	NF	no factor from 2^65 to 2^66
2010-09-11	Richard	NF	no factor from 2^64 to 2^65
2010-04-28	cnaTb_xo4y	NF	no factor from 2^63 to 2^64