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agoh_giuga.variants._1700_le_digits_length_of_isStrongGiuga

Specification

Bedocchi showed that any Giuga number has at least 1700 digits. Ref: E. Bedocchi, _Note on a conjecture about prime numbers_

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Lean 4 Statement 
theorem agoh_giuga.variants._1700_le_digits_length_of_isStrongGiuga
    (a : ℕ) (ha : IsStrongGiuga a) :
    (Nat.digits 10 a).length > 1700
ID: Wikipedia__AgohGiuga__agoh_giuga.variants._1700_le_digits_length_of_isStrongGiuga
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