Q: Is 400,055 a Prime Number?
A: No, 400,055 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 400055 can be evenly divided by 1 5 29 31 89 145 155 445 899 2,581 2,759 4,495 12,905 13,795 80,011 and 400,055, with no remainder.
Since 400,055 cannot be divided by just 1 and 400,055, it is not a prime number.