Q: Is 261,436 a Prime Number?
A: No, 261,436 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 261436 can be evenly divided by 1 2 4 7 14 28 9,337 18,674 37,348 65,359 130,718 and 261,436, with no remainder.
Since 261,436 cannot be divided by just 1 and 261,436, it is not a prime number.