decidablePrime' — Mathlib

English

The canonical decision for primality coincides with its simplified form in a singleton context.

Русский

Каноническое решение primality совпадает с его упрощённой формой в единственном контексте.

LaTeX

$$$\\\\mathrm{decidablePrime} = \\\\mathrm{decidablePrime'}.$$$

Lean4

/-- This definition is faster in the virtual machine than `decidablePrime`,
but slower in the kernel.
-/
def decidablePrime' (p : ℕ) : Decidable (Prime p) :=
  decidable_of_iff' _ prime_def_minFac

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