Q: Is 105,840 a Prime Number?
A: No, 105,840 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 105840 can be evenly divided by 1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 27 28 30 35 36 40 42 45 48 49 54 56 60 63 70 72 80 84 90 98 105 108 112 120 126 135 140 144 147 168 180 189 196 210 216 240 245 252 270 280 294 315 336 360 378 392 420 432 441 490 504 540 560 588 630 720 735 756 784 840 882 945 980 1,008 1,080 1,176 1,260 1,323 1,470 1,512 1,680 1,764 1,890 1,960 2,160 2,205 2,352 2,520 2,646 2,940 3,024 3,528 3,780 3,920 4,410 5,040 5,292 5,880 6,615 7,056 7,560 8,820 10,584 11,760 13,230 15,120 17,640 21,168 26,460 35,280 52,920 and 105,840, with no remainder.
Since 105,840 cannot be divided by just 1 and 105,840, it is not a prime number.