Q: Is 478,401 a Prime Number?
A: No, 478,401 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 478401 can be evenly divided by 1 3 7 11 19 21 33 57 77 109 133 209 231 327 399 627 763 1,199 1,463 2,071 2,289 3,597 4,389 6,213 8,393 14,497 22,781 25,179 43,491 68,343 159,467 and 478,401, with no remainder.
Since 478,401 cannot be divided by just 1 and 478,401, it is not a prime number.