Q: Is 783,400 a Prime Number?
A: No, 783,400 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 783400 can be evenly divided by 1 2 4 5 8 10 20 25 40 50 100 200 3,917 7,834 15,668 19,585 31,336 39,170 78,340 97,925 156,680 195,850 391,700 and 783,400, with no remainder.
Since 783,400 cannot be divided by just 1 and 783,400, it is not a prime number.