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Timeline for Semiprimes of the form n!+1

Current License: CC BY-SA 4.0

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Jul 4, 2023 at 23:29 comment added Stanley Yao Xiao The sequence $n! + 1$ grows far faster than $n^2 + 1$, and the modern methods of sieve theory cannot give results for such thin sequences as far as I know. For example, we can't prove whether the sequence $2^n - 1$ (a far fatter sequence) is square-free infinitely often, let alone a product of a bounded number of primes.
Jul 4, 2023 at 22:49 history edited Steppewolf
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S Jul 4, 2023 at 22:46 review First questions
Jul 5, 2023 at 0:57
S Jul 4, 2023 at 22:46 history asked Steppewolf CC BY-SA 4.0