The problem has long been known as a strong partner that can be divided by 1 and the importance of its own. And it is only together that is two numbers. From the past to the prediction, no one trying to prove or counter.
The problem has long been known as an important partner to guess. Can be divided by one and itself as well as the only two numbers apart. The speculation in the past, no one is trying to prove or disprove it.
Problems come long called Double guessing key can be divided by 1, and its own .And the couple prime only two numbers are far apart. From the past, no one guessed, try to prove or disprove.