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theorem proved term proof

fermat_one

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formal statement (Lean)

1259theorem fermat_one : Prime (2 ^ (2 ^ 1) + 1) := by native_decide

proof body

Term-mode proof.

1260
1261/-- F_2 = 2^(2^2) + 1 = 17 is a Fermat prime. -/

depends on (5)

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