Talk:752 Hex Code/@comment-972724-20150728033814/@comment-972724-20150811231233

Maybe the number we're looking for is a nonprime number, and we're supposed to divide it by 21 to turn it into a prime number. I think this is more likely, as the word prime is the root of primary, which is the most important of something, or the #1. 21 into 1 could therefore mean "divide by 21 to get a prime number".