Question

Prove that

3999991 is not prime.

Answer 1

@TheForbiddenFollower @Thoughts

Answer 2

\(3999991=4000000−9=2000^2−3^2\)

Answer 3

ok

Answer 4

Use : \(a^2 - b^2 = (a+b)(a-b) \) to get the factors of the given number.

(Proved : Its not prime)

Answer 5

ok I got the idea :) Thank you sir