Q: Is 261,240 a Prime Number?
A: No, 261,240 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 261240 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 28 30 35 40 42 56 60 70 84 105 120 140 168 210 280 311 420 622 840 933 1,244 1,555 1,866 2,177 2,488 3,110 3,732 4,354 4,665 6,220 6,531 7,464 8,708 9,330 10,885 12,440 13,062 17,416 18,660 21,770 26,124 32,655 37,320 43,540 52,248 65,310 87,080 130,620 and 261,240, with no remainder.
Since 261,240 cannot be divided by just 1 and 261,240, it is not a prime number.