Q: Is 255,240 a Prime Number?
A: No, 255,240 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 255240 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 90 120 180 360 709 1,418 2,127 2,836 3,545 4,254 5,672 6,381 7,090 8,508 10,635 12,762 14,180 17,016 21,270 25,524 28,360 31,905 42,540 51,048 63,810 85,080 127,620 and 255,240, with no remainder.
Since 255,240 cannot be divided by just 1 and 255,240, it is not a prime number.