Dickson's conjecture for residue class patterns of consecutive primes

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For q,m∈Nq,m \in \mathbb{N}, let pnp_n denote the nn-th prime and define

π(x;q,a)=#{pn≤x:pn+i−1≡ai(modq) for all i=1,2,…,m},\pi(x;q,\mathbf{a})=\#\{p_n \leq x:p_{n+i-1} \equiv a_i \pmod{q} \text{ for all }i=1,2,\ldots,m\},

for a∈∏i=1m(Z/qZ)×\mathbf{a} \in \prod_{i=1}^m (\mathbb{Z}/q\mathbb{Z})^\times. Dickson's conjecture. For any q,m∈Nq,m \in \mathbb{N} and a∈∏i=1m(Z/qZ)×\mathbf{a} \in \prod_{i=1}^m (\mathbb{Z}/q\mathbb{Z})^\times,

π(x;q,a)→∞as x→∞.\pi(x;q,\mathbf{a}) \to \infty \quad\text{as } x \to \infty.

Equivalently,

#{a∈∏i=1m(Z/qZ)×:π(x;q,a)→∞ as x→∞}=φ(q)m.\#\left\{\mathbf{a} \in \prod_{i=1}^m (\mathbb{Z}/q\mathbb{Z})^\times: \pi(x;q,\mathbf{a}) \to \infty \text{ as } x \to \infty\right\}=\varphi(q)^m.

This is presented as a consequence of Dickson's conjecture and asserts that every admissible residue pattern occurs infinitely often among consecutive primes. The statement is not proved in the paper and is therefore open.

References

Primary source

Cheuk Fung Lau, “Residue Class Patterns of Consecutive Primes”, arXiv:2409.12819 (2026).

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