154 807 981 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 2⁷⁸

P-1

B1 =	1315000
B2 =	1301082420

Status	Date	User	Residue	Shift	Type	Base
Verified	2024-10-02	S00030	85F3BB161FDF1E7A	0	1	3

History

Date	User	Type	Result
2024-10-02	ma2gikeil	CERT	PRP Certification CERT proof power = 9 Proof certified good
2024-10-02	S00030	C-PRP	85F3BB161FDF1E7A PRP proof power = 9 PRP: Verified Proof certified good
2024-09-26	Luke Durant	NF-PM1	B1=1315000, B2=1301082420
2024-08-13	SRBase	NF	no factor from 2^75 to 2^76
2023-02-16	SRBase	NF	no factor from 2^74 to 2^75
2021-11-14	SRBase	NF	no factor from 2^73 to 2^74
2017-07-29	Will Edgington	NF	no factor from 2^72 to 2^73
2017-07-27	Will Edgington	NF	no factor from 2^71 to 2^72
2017-07-27	Will Edgington	NF	no factor from 2^70 to 2^71
2017-07-20	La Güira	NF	no factor from 2^69 to 2^70
2017-03-07	-Anonymous-	NF	no factor from 2^68 to 2^69
2016-05-01	subgenius	NF	no factor from 2^67 to 2^68
2015-04-08	nikosz	NF	no factor from 2^66 to 2^67
2013-02-01	AKAxAuto	NF	no factor from 2^65 to 2^66
2011-01-22	Charles A. Morris	NF	no factor from 2^64 to 2^65
2010-06-27	garo	NF	no factor from 2^63 to 2^64