83 886 353 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 =	670000
B2 =	13232500

Status	Date	User	Residue	Shift	Type	Base
Verified	2019-03-07	Mihai Preda	C0BDCA435BEFE19F	0	4	3
Verified	2020-10-10	_p95holder_	C0BDCA435BEFE19F	9072394	4	3

History

Date	User	Type	Result
2020-10-10	_p95holder_	C-PRP	C0BDCA435BEFE19F PRP: Verified PRP without proof (not generated)
2019-03-07	Mihai Preda	C-PRP	C0BDCA435BEFE19F PRP: Verified PRP without proof (not generated)
2019-02-04	ATH	NF	no factor from 2^63 to 2^64
2019-02-04	ATH	NF	no factor from 2^1 to 2^63
2017-09-28	S485122	NF-PM1	B1=670000, B2=13232500, E=12
2017-03-26	TheJudger	NF	no factor from 2^75 to 2^76
2017-02-22	Brian Beuning	NF	no factor from 2^74 to 2^75
2017-02-13	-Anonymous-	NF	no factor from 2^73 to 2^74
2017-02-13	-Anonymous-	NF	no factor from 2^72 to 2^73
2017-02-13	-Anonymous-	NF	no factor from 2^71 to 2^72
2014-03-05	SMoffat	NF	no factor from 2^70 to 2^71
2013-02-20	-Anonymous-	NF	no factor from 2^69 to 2^70
2013-02-19	-Anonymous-	NF	no factor from 2^68 to 2^69
2013-02-19	-Anonymous-	NF	no factor from 2^67 to 2^68
2013-02-19	SMoffat	NF	no factor from 2^66 to 2^67
2012-09-13	Carsten Kossendey	NF	no factor from 2^65 to 2^66
2010-12-21	Architects Cubed	NF	no factor from 2^64 to 2^65