Q: Is 278,800 a Prime Number?
A: No, 278,800 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 278800 can be evenly divided by 1 2 4 5 8 10 16 17 20 25 34 40 41 50 68 80 82 85 100 136 164 170 200 205 272 328 340 400 410 425 656 680 697 820 850 1,025 1,360 1,394 1,640 1,700 2,050 2,788 3,280 3,400 3,485 4,100 5,576 6,800 6,970 8,200 11,152 13,940 16,400 17,425 27,880 34,850 55,760 69,700 139,400 and 278,800, with no remainder.
Since 278,800 cannot be divided by just 1 and 278,800, it is not a prime number.