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odd_perfect_number.lower_bound
Specification
A known result: If an odd perfect number exists, it must be greater than $10^{1500}$ and must have at least 101 prime factors (including multiplicities). Reference: Pascal Ochem, Michaël Rao (2012). "Odd perfect numbers are greater than 10^1500"
Lean 4 Statement
theorem odd_perfect_number.lower_bound (n : ℕ) (hn : Odd n) (hp : Perfect n) :
n > 10^1500 ∧ (n.primeFactorsList).length ≥ 101
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