Q: Is 259,840 a Prime Number?
A: No, 259,840 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 259840 can be evenly divided by 1 2 4 5 7 8 10 14 16 20 28 29 32 35 40 56 58 64 70 80 112 116 128 140 145 160 203 224 232 256 280 290 320 406 448 464 560 580 640 812 896 928 1,015 1,120 1,160 1,280 1,624 1,792 1,856 2,030 2,240 2,320 3,248 3,712 4,060 4,480 4,640 6,496 7,424 8,120 8,960 9,280 12,992 16,240 18,560 25,984 32,480 37,120 51,968 64,960 129,920 and 259,840, with no remainder.
Since 259,840 cannot be divided by just 1 and 259,840, it is not a prime number.