### Possible Answer

So 6 is Composite, but 7 is Prime. And that explains it ... but there are some more details ... Not Into Fractions. We are only dealing with whole numbers here! - read more

In mathematics, a Mersenne prime is a prime number of the form . This is to say that it is a prime number which is one less than a power of two. - read more

Please vote if the answer you were given helped you or not, thats the best way to improve our algorithm. You can also submit an answer or search documents about what is prime factorization of 400 using a factor tree.