Q: Is 243,408 a Prime Number?
A: No, 243,408 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 243408 can be evenly divided by 1 2 3 4 6 8 11 12 16 22 24 33 44 48 66 88 132 176 264 461 528 922 1,383 1,844 2,766 3,688 5,071 5,532 7,376 10,142 11,064 15,213 20,284 22,128 30,426 40,568 60,852 81,136 121,704 and 243,408, with no remainder.
Since 243,408 cannot be divided by just 1 and 243,408, it is not a prime number.