All equations are governed by their digital root cyclic order for all n-term (digital root 1..9). For the power series (i.e x^n), their digital root would repeat forever. From the plots of digital root for the prime numbers less than 2000, we can conclude that even at prime number less than 2000 it would be almost impossible to get an equation that could governed them. Therefore, as prime numbers go into infinity, there would be no equation could governed them. If there is an equation that could governed them it would definitely having an infinite variables.