160 311 821 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 2⁷⁹

TF target 2⁷⁸

P-1

B1 =	5000000
B2 =	150000000

Status	Date	User	Residue	Shift	Type	Base
Verified	2020-12-25	Roland Clarkson	FC982E632CDC4A99	0	1	3

History

Date	User	Type	Result
2020-12-25	Ben Delo	CERT	PRP Certification CERT proof power = 8 Proof certified good
2020-12-25	Roland Clarkson	C-PRP	FC982E632CDC4A99 PRP proof power = 8 PRP: Verified Proof certified good
2020-12-22	Roland Clarkson	NF-PM1	B1=5000000, B2=150000000
2020-12-19	Roland Clarkson	NF	no factor from 2^78 to 2^79
2020-12-19	Roland Clarkson	NF	no factor from 2^77 to 2^78
2020-12-19	Roland Clarkson	NF	no factor from 2^76 to 2^77
2020-12-19	Roland Clarkson	NF	no factor from 2^75 to 2^76
2020-12-19	Roland Clarkson	NF	no factor from 2^74 to 2^75
2020-12-19	Roland Clarkson	NF	no factor from 2^73 to 2^74
2017-11-20	Ilya Alexandrov	NF	no factor from 2^72 to 2^73
2017-11-18	jibo	NF	no factor from 2^71 to 2^72
2017-11-18	jibo	NF	no factor from 2^70 to 2^71
2017-03-29	La Güira	NF	no factor from 2^69 to 2^70
2017-03-29	La Güira	NF	no factor from 2^68 to 2^69
2016-03-02	XZT	NF	no factor from 2^67 to 2^68
2015-05-02	BJB	NF	no factor from 2^66 to 2^67
2013-02-26	Richard	NF	no factor from 2^65 to 2^66
2011-02-02	debrouxl	NF	no factor from 2^64 to 2^65
2010-06-29	Charles A. Morris	NF	no factor from 2^63 to 2^64