Characterize prime-composite patterns in attractors

Characterize the regularity, if any, in the sequences of prime and composite elements occurring in attractor cycles of the shifted Alladi–Erdős map.

Background

Every nontrivial attractor contains prime and composite elements governed respectively by the additive shift and the prime-factor-sum map. The paper identifies line-like parameter dependence but leaves unresolved whether the order or pattern of prime and composite entries in attractor cycles follows a systematic regularity.

References

The work opens several questions. Can attractors corresponding to different values of $A$ be grouped into classes so that attractors in a given class are ``similar"? Is there a regularity in the sequence of primes and composites in these attractors?

— Attractors and basins generated by repeated sums of prime factors of natural numbers  (2609.29232 - Shekatkar et al., 24 Sep 2026) in Section Discussion and conclusions