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New Prime Number Formula! 6n+1 or 6n-1...
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After 2 , every x€Z even number is not prime and also after 3, every x,3x€Z number is not prime. So this means that your fomula is right. and after number 3, the other prime numbers are 6x+1 or 6x-1 | x€Z.
Every prime number greater than 2 and 3 can be represented as 6n+1 or 6n-1. Prime Number Theorem: The probability that a number is prime is inversely proportional to its number of digits. Lemoine's Conjecture: Any odd integer greater than 5 can be expressed as the sum of an off prime and an even semiprime.