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Number theory

Prime-factor statistics of p-1

OpenAI research collection · 3 manuscripts · Source checked 2026-10-19

OpenAI's result summary

Proves that the normalized ordered logarithms of the prime factors of p-1, counted with multiplicity, converge jointly to the Poisson–Dirichlet law PD(1) as p ranges uniformly over primes up to x and x→∞. This resolves the Ford–Konyagin–Luca conjecture. It also proves that infinitely many integers n have more than n^{1-ε} totient preimages, for every ε > 0.

Read the manuscripts

Short excerpts below come from OpenAI's abstracts. The full abstract and original PDF preserve the paper's precise scope.

MANUSCRIPT 01

Weighted dilation graphs, smooth shifted primes and totient fibers

We prove Erdős's conjecture on the largest fibers of Euler's totient function: for every ε > 0, infinitely many positive integers n have more than n^{1-ε } preimages. We also show that, for every fixed δ > 0, there are at least x^{1-o(1)} primes p in 2x< p\le5x whose predecessors have no prime factor exceeding x^(δ).

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MANUSCRIPT 02

The Poisson-Dirichlet law for prime predecessors

For a prime p chosen uniformly from 3≤ p≤ x, list the prime factors of p-1 in decreasing order, with multiplicity. As x→∞, their logarithms, divided by log(p-1), converge in every finite joint distribution to the Poisson–Dirichlet distribution with parameter one. This proves the conjecture of Ford, Konyagin and Luca.

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MANUSCRIPT 03

Prime Predecessors with an Even Number of Prime Factors

We prove that there are infinitely many primes p for which p-1 is squarefree and has an even number of prime factors. Equivalently, there are infinitely many primes p with \mu(p-1)=1.

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