56 182 661 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

TF

No factors below 2⁷⁴

TF target 2⁷³

P-1

B1 =	600000
B2 =	14250000

Status	Date	User	Residue	Shift
Unverified	2012-08-04	curtisc	F1E804123B7559__	45452696

Status	Date	User	Residue	Shift	Type	Base
Verified	2021-03-26	Conductor	16AC6562A31D6AF0	48758777	1	3
Verified	2021-04-03	ATH	16AC6562A31D6AF0	0	1	3
Verified	2021-04-30	Conductor	16AC6562A31D6AF0	48758777	1	3

History

Date	User	Type	Result
2021-04-30	Ben Delo	CERT	PRP Certification CERT proof power = 9 Proof certified good
2021-04-30	Conductor	C-PRP	16AC6562A31D6AF0 PRP proof power = 9 PRP: Verified Proof certified good
2021-04-03	ATH	C-PRP	16AC6562A31D6AF0 PRP: Verified PRP without proof (not generated)
2018-05-19	ktony	NF	no factor from 2^73 to 2^74
2016-02-23	Mark Rose	NF	no factor from 2^60 to 2^63
2015-12-30	-Anonymous-	NF	no factor from 2^72 to 2^73
2012-08-04	curtisc	C-LL	F1E804123B7559__
2012-04-30	bcp19	NF	no factor from 2^71 to 2^72
2012-02-07	apocalypse	NF-PM1	B1=600000, B2=14250000, E=6
2011-08-08	GrunwalderGIMP	NF	no factor from 2^70 to 2^71
2011-06-05	-Anonymous-	NF	no factor from 2^69 to 2^70
2011-04-14	eon_blue_apocalypse	NF	no factor from 2^68 to 2^69
2009-11-17	GrunwalderGIMP	NF	no factor from 2^67 to 2^68
2008-07-06	Sturle Sunde	NF	no factor from 2^66 to 2^67
2008-07-05	Sturle Sunde	NF	no factor from 2^65 to 2^66
2008-07-04	Sturle Sunde	NF	no factor from 2^64 to 2^65
2008-07-04	Sturle Sunde	NF	no factor from 2^63 to 2^64