Q: Is 261,608 a Prime Number?
A: No, 261,608 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 261608 can be evenly divided by 1 2 4 8 53 106 212 424 617 1,234 2,468 4,936 32,701 65,402 130,804 and 261,608, with no remainder.
Since 261,608 cannot be divided by just 1 and 261,608, it is not a prime number.