Q: Is 261,490 a Prime Number?
A: No, 261,490 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 261490 can be evenly divided by 1 2 5 10 79 158 331 395 662 790 1,655 3,310 26,149 52,298 130,745 and 261,490, with no remainder.
Since 261,490 cannot be divided by just 1 and 261,490, it is not a prime number.