84 855 839 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 2⁷⁵

P-1

B1 =	675000
B2 =	12656250

Status	Date	User	Residue	Shift	Type	Base
Verified	2019-04-26	ky0uraku	53F731D81B93CBA4	54780197	1	3
Verified	2021-01-31	ATH	53F731D81B93CBA4	0	1	3

History

Date	User	Type	Result
2024-08-07	Jarod McClintock	NF	no factor from 2^71 to 2^73
2021-01-31	ATH	C-PRP	53F731D81B93CBA4 PRP: Verified PRP without proof (not generated)
2019-04-27	ATH	NF	no factor from 2^63 to 2^64
2019-04-27	ATH	NF	no factor from 2^1 to 2^63
2019-04-26	ky0uraku	C-PRP	53F731D81B93CBA4 PRP: Verified PRP without proof (not generated)
2017-12-04	ATH	NF-PM1	B1=675000, B2=12656250
2017-08-25	HardyP Germany	NF	no factor from 2^75 to 2^76
2017-06-11	The Mawn	NF	no factor from 2^74 to 2^75
2017-05-19	-Anonymous-	NF	no factor from 2^73 to 2^74
2017-02-13	Judge Hale	NF	no factor from 2^72 to 2^73
2017-02-13	Judge Hale	NF	no factor from 2^71 to 2^72
2014-08-12	Ryan Propper	NF	no factor from 2^70 to 2^71
2013-03-13	Vladimir Tshegolevatykh	NF	no factor from 2^69 to 2^70
2013-03-09	cocotion	NF	no factor from 2^68 to 2^69
2013-03-09	Todd Walke	NF	no factor from 2^67 to 2^68
2013-03-07	Manfred Künzler Swiss	NF	no factor from 2^66 to 2^67
2012-08-05	Carsten Kossendey	NF	no factor from 2^65 to 2^66
2010-12-22	Architects Cubed	NF	no factor from 2^64 to 2^65