Q: Is 266,720 a Prime Number?
A: No, 266,720 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 266720 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 80 160 1,667 3,334 6,668 8,335 13,336 16,670 26,672 33,340 53,344 66,680 133,360 and 266,720, with no remainder.
Since 266,720 cannot be divided by just 1 and 266,720, it is not a prime number.