margin of error

#1
Find the minimum sample size you should use to assure that your estimate of
p^ will be within the required margin of error around the population p.

Margin of error: 0.001; confidence level: 92%; p^ and ^q unknown

(my work)

E= 0.001, conf level= 92%, x= .08, x/2= .04= .004
A= 1 - .004= .996, Z x/2= 2.65

N= (2.65)squared (.5)(.5) / (0.001) squared=
1.755625 / 0.001= 1755625

I was wondering if I done this correctly and if I should round off the answer.
Thanks for any help!!!