121 074 557 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 2⁷⁷

TF target 2⁷⁷

P-1

B1 =	739000
B2 =	98180712

Status	Date	User	Residue	Shift	Type	Base
Verified	2024-05-11	Luke Durant	E830772583165060	0	1	3

History

Date	User	Type	Result
2024-05-11	natebranscum	CERT	PRP Certification CERT proof power = 9 Proof certified good
2024-05-11	Luke Durant	C-PRP	E830772583165060 PRP proof power = 9 PRP: Verified Proof certified good
2024-01-15	Jaytholomew	NF-PM1	B1=739000, B2=98180712
2022-06-22	TheJudger	NF	no factor from 2^76 to 2^77
2021-07-23	RichD0	NF	no factor from 2^75 to 2^76
2021-07-23	gcardona	NF	no factor from 2^74 to 2^75
2021-07-05	SRBase	NF	no factor from 2^73 to 2^74
2020-10-20	SRBase	NF	no factor from 2^72 to 2^73
2015-06-09	endless_mike	NF	no factor from 2^71 to 2^72
2015-06-04	bunddog	NF	no factor from 2^70 to 2^71
2013-11-02	GrunwalderGIMP	NF	no factor from 2^69 to 2^70
2013-11-02	GrunwalderGIMP	NF	no factor from 2^68 to 2^69
2013-11-02	GrunwalderGIMP	NF	no factor from 2^66 to 2^68
2012-08-09	sasaki3	NF	no factor from 2^65 to 2^66
2010-10-20	Charles A. Morris	NF	no factor from 2^64 to 2^65
2010-05-23	Richard	NF	no factor from 2^63 to 2^64