Q: Is 521,004 a Prime Number?
A: No, 521,004 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 521004 can be evenly divided by 1 2 3 4 6 11 12 22 33 44 66 132 3,947 7,894 11,841 15,788 23,682 43,417 47,364 86,834 130,251 173,668 260,502 and 521,004, with no remainder.
Since 521,004 cannot be divided by just 1 and 521,004, it is not a prime number.