5
This number is a prime.
Single Curio View: (Seek other curios for this number)
13/1! + 23/2! + 33/3! +
43/4! + ... = 5 times e. [Gudipati]
Submitted: 2026-09-08 06:35:27; Last Modified: 2026-09-08 11:26:12.
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