The Collatz discrete primes!

3x+1 revisited.


2,3,7,19,37,43,73,79,97,109,127,151,163,181,199,223,241,271
,277,307,313,331,349,367,379,397,421,439...

The above prime list are primes (p) that are not in any seed (n)
path where any given seed (n) is < (p).

e.g.
For prime 73 to make this list then ---

All seeds (n) where n= (1,2,3,4,.72) 73 does not
appear in any of these seed paths of (n) in the Collatz tree.

Also after the second term in the list they all are...
(p-1)==0(mod 3).

Will there ever be a prime in this list where (p-1) is
not a 0(mod 3)?

There are many primes (not) in this list where (p-1) is
not a 0(mod 3) and some that are a 0(mod 3) that are
not on this list.

Also, does this list ---->oo?

Dan

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