Q: Is 280,240 a Prime Number?
A: No, 280,240 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 280240 can be evenly divided by 1 2 4 5 8 10 16 20 31 40 62 80 113 124 155 226 248 310 452 496 565 620 904 1,130 1,240 1,808 2,260 2,480 3,503 4,520 7,006 9,040 14,012 17,515 28,024 35,030 56,048 70,060 140,120 and 280,240, with no remainder.
Since 280,240 cannot be divided by just 1 and 280,240, it is not a prime number.