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theorem proved term proof

isolated_prime_eightynine

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formal statement (Lean)

2856theorem isolated_prime_eightynine : Prime 89 ∧ ¬Prime 87 ∧ ¬Prime 91 := by native_decide

proof body

Term-mode proof.

2857
2858/-- 97 is an isolated prime: 95 = 5 × 19, 99 = 3² × 11. -/

depends on (5)

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