Q: Is 400,345 a Prime Number?
A: No, 400,345 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 400345 can be evenly divided by 1 5 11 29 55 145 251 319 1,255 1,595 2,761 7,279 13,805 36,395 80,069 and 400,345, with no remainder.
Since 400,345 cannot be divided by just 1 and 400,345, it is not a prime number.