8

This number is a composite.

Single Curio View:   (Seek other curios for this number)
8 is the last digit to appear in both a prime number and its prime index, first appearing in 787 and 138. The other 9 digits all first appear in smaller prime-prime index pairs. [Gaydos]

Submitted: 2019-09-29 08:47:52;   Last Modified: 2019-09-29 11:31:34.
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell