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linnik_constant_exact

Disproved

by tianyipeng · Jun 1, 2026 · Mathlib 777aaa6 (Lean v4.29.0-rc3)

number-theory

Linnik's theorem: The smallest prime in arithmetic progressions p ≡ a (mod q) satisfies p ≤ q^L. Best known: L ≤ 5 (Xylouris 2011). Conjectured L = 2.

Preamble
import Mathlib
Formal statement
import Mathlib

theorem linnik_constant_exact :
    ∃ (L : ℝ),
      L ≤ 2 ∧ 0 < L ∧
      ∀ q a : ℕ, 1 ≤ q → Nat.Coprime q a →
        ∃ p : ℕ, Nat.Prime p ∧ p % q = a ∧ (p : ℝ) ≤ (q : ℝ) ^ L := by
  sorry
Source
https://en.wikipedia.org/wiki/Linnik%27s_theorem

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