81 047 273 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 2⁷⁵

P-1

B1 =	700000
B2 =	12950000

Status	Date	User	Residue	Shift	Type	Base
Verified	2018-09-02	George Woltman	C588C800673813B7	10014410	1	3
Verified	2019-10-17	ky0uraku	C588C800673813B7	56083646	1	3

History

Date	User	Type	Result
2019-10-17	ky0uraku	C-PRP	C588C800673813B7 PRP: Verified PRP without proof (not generated)
2018-09-02	George Woltman	C-PRP	C588C800673813B7 PRP: Verified PRP without proof (not generated)
2017-04-25	Smok_bmv	NF-PM1	B1=700000, B2=12950000
2016-10-01	dh1	NF	no factor from 2^74 to 2^75
2013-11-18	tomfr	NF	no factor from 2^73 to 2^74
2013-11-18	tomfr	NF	no factor from 2^72 to 2^73
2013-11-18	tomfr	NF	no factor from 2^71 to 2^72
2013-11-18	tomfr	NF	no factor from 2^70 to 2^71
2013-02-10	-Anonymous-	NF	no factor from 2^69 to 2^70
2013-02-02	-Anonymous-	NF	no factor from 2^68 to 2^69
2013-01-26	rjbelans	NF	no factor from 2^67 to 2^68
2011-02-13	LingUaan	NF	no factor from 2^66 to 2^67
2011-02-06	steinrar	NF	no factor from 2^65 to 2^66
2010-12-12	Architects Cubed	NF	no factor from 2^64 to 2^65