4273
This number is a prime.
The smallest 4-digit prime whose the 4th power begins with four identical digits, i.e., 4273^4=333373881243841. Note that R(4273^4) is prime. [Loungrides]
The first of eleven consecutive primes that are all
Yarborough primes. [Gaydos]
(There is one curio for this number that has not yet been approved by an editor.)
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