factor: Fix very-rare bug in ρ#1549
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Arcterus merged 4 commits intoJun 19, 2020
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The test is repeated 20 times to make it overwhelmingly-likely to fail (the bug itself is only triggered rarely)
This bug can only be triggered when: - the Miller-Rabin test produces a divisor `d` (rare) ; - n / d is prime.
sylvestre
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Jun 19, 2020
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factor::numeric::inv_mod_u64I introduced the problematic codepath in commit 8241037 (#1525)