Q: Is 280,320 a Prime Number?
A: No, 280,320 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 280320 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 73 80 96 120 128 146 160 192 219 240 256 292 320 365 384 438 480 584 640 730 768 876 960 1,095 1,168 1,280 1,460 1,752 1,920 2,190 2,336 2,920 3,504 3,840 4,380 4,672 5,840 7,008 8,760 9,344 11,680 14,016 17,520 18,688 23,360 28,032 35,040 46,720 56,064 70,080 93,440 140,160 and 280,320, with no remainder.
Since 280,320 cannot be divided by just 1 and 280,320, it is not a prime number.