Q: Is 279,820 a Prime Number?
A: No, 279,820 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 279820 can be evenly divided by 1 2 4 5 10 17 20 34 68 85 170 340 823 1,646 3,292 4,115 8,230 13,991 16,460 27,982 55,964 69,955 139,910 and 279,820, with no remainder.
Since 279,820 cannot be divided by just 1 and 279,820, it is not a prime number.