Q: Is 558,138 a Prime Number?
A: No, 558,138 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 558138 can be evenly divided by 1 2 3 6 7 14 21 42 97 137 194 274 291 411 582 679 822 959 1,358 1,918 2,037 2,877 4,074 5,754 13,289 26,578 39,867 79,734 93,023 186,046 279,069 and 558,138, with no remainder.
Since 558,138 cannot be divided by just 1 and 558,138, it is not a prime number.