Q: Is 661,040 a Prime Number?
A: No, 661,040 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 661040 can be evenly divided by 1 2 4 5 8 10 16 20 40 80 8,263 16,526 33,052 41,315 66,104 82,630 132,208 165,260 330,520 and 661,040, with no remainder.
Since 661,040 cannot be divided by just 1 and 661,040, it is not a prime number.