74 426 083 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Tested as composite (unverified, reliable): unconfirmed PRP test says not-prime

TF

No factors below 2⁷⁵

TF target 2⁷⁴

P-1

B1 =	645000
B2 =	12900000

Status	Date	User	Residue	Shift
Unverified	2016-04-04	AirSquirrels	E17925BC9A6D27__	7769365

Status	Date	User	Residue	Shift	Type	Base
Unverified (Reliable)	2024-11-27	Luke Durant	CA6A2C615D028B__	0	1	3

History

Date	User	Type	Result
2024-11-27	Luke Durant	C-PRP	CA6A2C615D028B__ PRP proof power = 9 PRP: Unverified (Reliable) PRP proof not yet uploaded
2016-04-04	AirSquirrels	C-LL	E17925BC9A6D27__
2016-04-02	Mark Rose	NF	no factor from 2^65 to 2^66
2015-08-30	TheJudger	NF-PM1	B1=645000, B2=12900000, E=12
2015-08-26	BigBrother	NF	no factor from 2^74 to 2^75
2015-08-26	BigBrother	NF	no factor from 2^73 to 2^74
2015-08-26	BigBrother	NF	no factor from 2^72 to 2^73
2015-08-26	BigBrother	NF	no factor from 2^71 to 2^72
2013-05-12	Yaroslavl	NF	no factor from 2^70 to 2^71
2012-10-24	SMoffat	NF	no factor from 2^69 to 2^70
2010-10-04	arnaud	NF	no factor from 2^68 to 2^69
2010-09-26	GrunwalderGIMP	NF	no factor from 2^67 to 2^68
2010-07-26	Per Jessen	NF	no factor from 2^66 to 2^67
2010-07-09	CLICHE	NF	no factor from 2^64 to 2^65
2008-09-12	lycorn	NF	no factor to 2^64