2543
This number is a prime.
The first prime containing three prime digits in the sequence of primes whose digits can be arranged as consecutive digits. [Upadhyay]
2543 appears at the 2543rd decimal digit of "e" (excluding the first whole number digit). [Hardisky]
The smallest prime number formed by using all the digits that are cubic non-residues modulo 7 (2, 3, 4, 5). [Nie]
(There is one curio for this number that has not yet been approved by an editor.)
Printed from the PrimePages <t5k.org> © G. L. Honaker and Reginald McLean