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agoh_giuga.variants.isStrongGiuga_implies_isCarmichael

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Every strong Giuga number is a Carmichael number.

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Lean 4 Statement 
theorem agoh_giuga.variants.isStrongGiuga_implies_isCarmichael
    (a : ℕ) (ha : IsStrongGiuga a) : IsCarmichael a
ID: Wikipedia__AgohGiuga__agoh_giuga.variants.isStrongGiuga_implies_isCarmichael
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