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theorem proved term proof

safe_prime_twentythree

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formal statement (Lean)

1417theorem safe_prime_twentythree : Prime 23 ∧ Prime ((23 - 1) / 2) := by native_decide

proof body

Term-mode proof.

1418
1419/-- 47 is a safe prime: (47-1)/2 = 23 is prime. -/

depends on (5)

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