Q: Is 139,580 a Prime Number?
A: No, 139,580 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 139580 can be evenly divided by 1 2 4 5 7 10 14 20 28 35 70 140 997 1,994 3,988 4,985 6,979 9,970 13,958 19,940 27,916 34,895 69,790 and 139,580, with no remainder.
Since 139,580 cannot be divided by just 1 and 139,580, it is not a prime number.