Q: Is 401,505 a Prime Number?
A: No, 401,505 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 401505 can be evenly divided by 1 3 5 13 15 29 39 65 71 87 145 195 213 355 377 435 923 1,065 1,131 1,885 2,059 2,769 4,615 5,655 6,177 10,295 13,845 26,767 30,885 80,301 133,835 and 401,505, with no remainder.
Since 401,505 cannot be divided by just 1 and 401,505, it is not a prime number.