Q: Is 243,840 a Prime Number?
A: No, 243,840 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 243840 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 127 128 160 192 240 254 320 381 384 480 508 635 640 762 960 1,016 1,270 1,524 1,905 1,920 2,032 2,540 3,048 3,810 4,064 5,080 6,096 7,620 8,128 10,160 12,192 15,240 16,256 20,320 24,384 30,480 40,640 48,768 60,960 81,280 121,920 and 243,840, with no remainder.
Since 243,840 cannot be divided by just 1 and 243,840, it is not a prime number.