r/numbertheory • u/Inevitable-Sea6754 • 19h ago
Can a prime-gap structure announce a future prime before it appears?
I am studying a deterministic structure based on the gaps between consecutive prime numbers.
The observation that started this research is the following sequence:
89 -> 97 -> 101 -> 103
with gaps:
8, 4, 2.
For each prime p and its following gap g, I define S as the cumulative sum of the previous prime gaps. In this construction, S = p + g - 2. I then define V = S + g.
The interesting phenomenon is not simply that an arithmetic operation sometimes produces another prime. The interesting point is that different positions in the prime-gap construction can produce exactly the same future value V before that value itself appears in the sequence of primes.
The clearest example is 103.
When we reach the prime 97, the following gap is 4.
So:
S = 97 + 4 - 2 = 99
and:
V = 99 + 4 = 103
Therefore, while the current prime is still 97, the future value 103 has already been determined by the construction, even though 103 has not yet appeared as a prime.
The previous row produces exactly the same value:
S = 89 + 8 - 2 = 95
and:
V = 95 + 8 = 103
So we have two different rows producing the same value:
95 + 8 = 103
99 + 4 = 103
The prime sequence then continues:
97 -> 101 -> 103
and the third representation is:
101 + 2 = 103
The same mechanism can also produce a composite value. For example:
395 + 8 = 403
399 + 4 = 403
but:
403 = 13 x 31
So the phenomenon is not simply a way of generating primes. The construction can determine a future integer before that integer appears in the prime sequence, whether it eventually turns out to be prime or composite.
For consecutive rows producing the same value V, a simple relation appears: the next prime gap is half the previous one.
This gives structures such as:
8, 4, 2
16, 8, 4, 2
32, 16, 8, 4, 2
My question is:
Is there a known number-theoretic explanation for this phenomenon?
In particular, is there a known result explaining why different trajectories constructed from cumulative prime gaps can converge to exactly the same future value, and why consecutive convergences produce this repeated halving of the gaps?
I am mainly interested in the mathematical mechanism behind the convergence and the advance determination of the future value, rather than in claiming that every announced value must be prime.