Q: Is 210,987 a Prime Number?
A: No, 210,987 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 210987 can be evenly divided by 1 3 7 9 17 21 51 63 119 153 197 357 591 1,071 1,379 1,773 3,349 4,137 10,047 12,411 23,443 30,141 70,329 and 210,987, with no remainder.
Since 210,987 cannot be divided by just 1 and 210,987, it is not a prime number.