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theorem proved term proof

weak_prime_fortyseven

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formal statement (Lean)

2768theorem weak_prime_fortyseven : Prime 47 ∧ Prime 43 ∧ Prime 53 ∧ 47 < (43 + 53) / 2 := by native_decide

proof body

Term-mode proof.

2769
2770/-- 61 is a weak prime: 61 < (59 + 67)/2 = 63. -/

depends on (5)

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