0.2357113171913292137...

This number is neither prime nor composite.

0. 2357113171 9132921373 1434743595

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Real number whose decimal digits are defined by writing the primes backwards in base 10 and juxtaposing their digits. [Post and Librandi]

Submitted: 2013-08-27 03:21:18; Last Modified: 2020-06-18 15:29:37.