Q: Is 163,840 a Prime Number?
A: No, 163,840 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 163840 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 512 640 1,024 1,280 2,048 2,560 4,096 5,120 8,192 10,240 16,384 20,480 32,768 40,960 81,920 and 163,840, with no remainder.
Since 163,840 cannot be divided by just 1 and 163,840, it is not a prime number.