Q: Is 1,201,521 a Prime Number?
A: No, 1,201,521 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 1201521 can be evenly divided by 1 3 157 471 2,551 7,653 400,507 and 1,201,521, with no remainder.
Since 1,201,521 cannot be divided by just 1 and 1,201,521, it is not a prime number.