Q: Is 261,500 a Prime Number?
A: No, 261,500 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 261500 can be evenly divided by 1 2 4 5 10 20 25 50 100 125 250 500 523 1,046 2,092 2,615 5,230 10,460 13,075 26,150 52,300 65,375 130,750 and 261,500, with no remainder.
Since 261,500 cannot be divided by just 1 and 261,500, it is not a prime number.