Q: Is 261,009 a Prime Number?
A: No, 261,009 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 261009 can be evenly divided by 1 3 7 9 21 27 63 189 1,381 4,143 9,667 12,429 29,001 37,287 87,003 and 261,009, with no remainder.
Since 261,009 cannot be divided by just 1 and 261,009, it is not a prime number.