73 884 949 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 2⁷⁵

TF target 2⁷⁴

P-1

B1 =	635000
B2 =	12700000

Status	Date	User	Residue	Shift
Unverified	2017-07-01	Dmitriy Degtiarev	054E171FE08D27__	6184131

Status	Date	User	Residue	Shift	Type	Base
Verified	2024-11-15	Luke Durant	4E3914F18B531DF2	0	1	3

History

Date	User	Type	Result
2024-11-15	LOBES	CERT	PRP Certification CERT proof power = 9 Proof certified good
2024-11-15	Luke Durant	C-PRP	4E3914F18B531DF2 PRP proof power = 9 PRP: Verified Proof certified good
2017-07-01	Dmitriy Degtiarev	C-LL	054E171FE08D27__
2015-11-04	Nesowa	NF-PM1	B1=635000, B2=12700000, E=6
2015-10-22	Tim Sorbera	NF	no factor from 2^74 to 2^75
2015-10-22	Tim Sorbera	NF	no factor from 2^73 to 2^74
2015-10-04	Bdot	NF	no factor from 2^72 to 2^73
2015-05-08	RichD0	NF	no factor from 2^71 to 2^72
2013-08-13	Pung	NF	no factor from 2^70 to 2^71
2012-10-18	gregor	NF	no factor from 2^69 to 2^70
2010-12-13	eon_blue_apocalypse	NF	no factor from 2^68 to 2^69
2010-12-10	arnaud	NF	no factor from 2^67 to 2^68
2010-12-01	arnaud	NF	no factor from 2^66 to 2^67
2010-11-26	Wolfgang Steger	NF	no factor from 2^65 to 2^66
2010-11-21	Ken L.	NF	no factor from 2^64 to 2^65
2008-07-16	George Woltman	NF	no factor to 2^64