Q: Is 321,536 a Prime Number?
A: No, 321,536 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 321536 can be evenly divided by 1 2 4 8 16 32 64 128 157 256 314 512 628 1,024 1,256 2,048 2,512 5,024 10,048 20,096 40,192 80,384 160,768 and 321,536, with no remainder.
Since 321,536 cannot be divided by just 1 and 321,536, it is not a prime number.