43
This number is a prime.
Single Curio View: (Seek other curios for this number)
The only double-digit prime p such that (p!/(R(p))-1 is
prime, i.e., (43!/34!)-1 = 204636013545599. [Patterson and
Loungrides]
Submitted: 2020-02-24 19:41:06; Last Modified: 2020-06-14 14:28:05.
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