Q: Is 2,521,340 a Prime Number?
A: No, 2,521,340 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2521340 can be evenly divided by 1 2 4 5 10 20 126,067 252,134 504,268 630,335 1,260,670 and 2,521,340, with no remainder.
Since 2,521,340 cannot be divided by just 1 and 2,521,340, it is not a prime number.