Q: Is 1,821,506 a Prime Number?
A: No, 1,821,506 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 1821506 can be evenly divided by 1 2 811 1,123 1,622 2,246 910,753 and 1,821,506, with no remainder.
Since 1,821,506 cannot be divided by just 1 and 1,821,506, it is not a prime number.