89 041 987 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 =	14318750

Status	Date	User	Residue	Shift
Unverified	2019-03-14	Samuel Schmidt	D492FA6DFE4F95__	76912293

Status	Date	User	Residue	Shift	Type	Base
Verified	2024-10-25	mewturn	7684ACE1A82FC334	0	1	3

History

Date	User	Type	Result
2024-11-05	spica	CERT	PRP Certification CERT proof power = 7 Proof certified good
2024-10-25	mewturn	C-PRP	7684ACE1A82FC334 PRP proof power = 7 PRP: Verified Proof certified good
2019-03-14	Samuel Schmidt	C-LL	D492FA6DFE4F95__
2018-11-04	TheJudger	NF-PM1	B1=725000, B2=14318750, E=12
2018-09-09	TheJudger	NF	no factor from 2^75 to 2^76
2018-09-09	TheJudger	NF	no factor from 2^74 to 2^75
2017-08-15	RichD0	NF	no factor from 2^73 to 2^74
2013-03-12	jondi_hanluc	NF	no factor from 2^72 to 2^73
2013-03-12	jondi_hanluc	NF	no factor from 2^71 to 2^72
2013-03-12	jondi_hanluc	NF	no factor from 2^70 to 2^71
2013-03-12	jondi_hanluc	NF	no factor from 2^69 to 2^70
2013-03-12	jondi_hanluc	NF	no factor from 2^68 to 2^69
2013-03-12	jondi_hanluc	NF	no factor from 2^67 to 2^68
2013-03-12	jondi_hanluc	NF	no factor from 2^65 to 2^67
2010-11-01	Architects Cubed	NF	no factor from 2^64 to 2^65