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feat(Wikipedia): Fortune's conjecture on Fortunate numbers#3714

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joshuasteier wants to merge 1 commit intogoogle-deepmind:mainfrom
joshuasteier:fortune-conjecture-3688
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feat(Wikipedia): Fortune's conjecture on Fortunate numbers#3714
joshuasteier wants to merge 1 commit intogoogle-deepmind:mainfrom
joshuasteier:fortune-conjecture-3688

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Closes #3688

Formalizes Fortune's conjecture: every Fortunate number is prime.

Uses primorial from Mathlib.NumberTheory.Primorial and Nat.Prime for the conjecture statement. The fortunateNumber function is defined as the infimum of integers m > 1 such that primorial n + m is prime.

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Fortune's conjecture on Fortunate numbers

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