theorem proved term proof

`mod4_thirtyone_prime`

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formal statement (Lean)

1613theorem mod4_thirtyone_prime : Prime 31 ∧ 31 % 4 = 3 := by native_decide

Term-mode proof.

1614
1615/-- 43 ≡ 3 (mod 4). -/

Lean names referenced from this declaration's body.