8363
This number is a prime.
The number of five-digit prime numbers. [Dobb]
A prime which is equal to the sum of the proper divisors of two preceding integers. Can you find a larger prime with this property? (Sigma(8361)-8361+Sigma(8362)-8362=8363) [Sariyar]
(There is one curio for this number that has not yet been approved by an editor.)
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