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 13:47:52; Last Modified: 2019-09-29 16:31:34.
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