Q: Is 400,512 a Prime Number?
A: No, 400,512 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 400512 can be evenly divided by 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 84 96 112 128 149 168 192 224 298 336 384 447 448 596 672 894 896 1,043 1,192 1,344 1,788 2,086 2,384 2,688 3,129 3,576 4,172 4,768 6,258 7,152 8,344 9,536 12,516 14,304 16,688 19,072 25,032 28,608 33,376 50,064 57,216 66,752 100,128 133,504 200,256 and 400,512, with no remainder.
Since 400,512 cannot be divided by just 1 and 400,512, it is not a prime number.