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agoh_giuga.variants.le_primeFactors_card_of_isStrongGiuga

Specification

Giuga showed that a Giuga number has at least 9 prime factors. Ref: G. Giuga, _Su una presumibile proprieta caratteristica dei numeri primi_

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Lean 4 Statement 
theorem agoh_giuga.variants.le_primeFactors_card_of_isStrongGiuga
    (a : ℕ) (ha : IsStrongGiuga a) : 9 ≤ a.primeFactors.card
ID: Wikipedia__AgohGiuga__agoh_giuga.variants.le_primeFactors_card_of_isStrongGiuga
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