I will find a prime number formula. My pseudo-prime number formula is only the beginning.

Did anybody else notice that a lot of primes at the start end with three except when the other number is divisible by three?

Like 3
13
23
but because 3 is divisible by three
33 isn't prime.
but 43 and 53 are and 63 isn't
you can follow that pattern like 10+ times.