G. Austria 2015 Problem 4
Show that every positive integer ending in $133$ in decimal representation has a prime factor larger than $7$.
import Mathlib.Algebra.Prime.Defs import Mathlib.Algebra.Ring.Int.Defs theorem solution (n : ℤ) (hn : 0 < n) (h133 : n % 1000 = 133) : ∃ p > 7, Prime p ∧ p ∣ n := sorry
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