Q: Is 345,240 a Prime Number?
A: No, 345,240 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 345240 can be evenly divided by 1 2 3 4 5 6 7 8 9 10 12 14 15 18 20 21 24 28 30 35 36 40 42 45 56 60 63 70 72 84 90 105 120 126 137 140 168 180 210 252 274 280 315 360 411 420 504 548 630 685 822 840 959 1,096 1,233 1,260 1,370 1,644 1,918 2,055 2,466 2,520 2,740 2,877 3,288 3,836 4,110 4,795 4,932 5,480 5,754 6,165 7,672 8,220 8,631 9,590 9,864 11,508 12,330 14,385 16,440 17,262 19,180 23,016 24,660 28,770 34,524 38,360 43,155 49,320 57,540 69,048 86,310 115,080 172,620 and 345,240, with no remainder.
Since 345,240 cannot be divided by just 1 and 345,240, it is not a prime number.