User solpa - MathOverflow

solpa

Member for 4 years, 4 months
Last seen more than a month ago

163 Reputation

Post Time Graph

+10

Oct 16, 2023

upvote +10

Is $\sum_{k=1}^{n}\frac{(n-1)!}{(k-1)!}$ composite for $n\geq 4$?

+10

Oct 15, 2023

upvote +10

Is $\sum_{k=1}^{n}\frac{(n-1)!}{(k-1)!}$ composite for $n\geq 4$?

+20

Oct 14, 2023

2 events +20

Is $\sum_{k=1}^{n}\frac{(n-1)!}{(k-1)!}$ composite for $n\geq 4$?

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+10

Oct 18, 2021

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+2

Jul 28, 2020

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+110

Jul 27, 2020

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