Q: Is 278,670 a Prime Number?
A: No, 278,670 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 278670 can be evenly divided by 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 1,327 2,654 3,981 6,635 7,962 9,289 13,270 18,578 19,905 27,867 39,810 46,445 55,734 92,890 139,335 and 278,670, with no remainder.
Since 278,670 cannot be divided by just 1 and 278,670, it is not a prime number.