Q: Is 218,720 a Prime Number?
A: No, 218,720 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 218720 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 80 160 1,367 2,734 5,468 6,835 10,936 13,670 21,872 27,340 43,744 54,680 109,360 and 218,720, with no remainder.
Since 218,720 cannot be divided by just 1 and 218,720, it is not a prime number.