50350...93599 (42-digits)

This number is a prime.

                              50 3509521523 5415475575 6356957157 7587593599

Just showing those entries submitted by 'Loungrides': (Click here to show all)

+ The only prime formed by concatenating in order all the 3-digit primes beginning with the same digit d, (case d=5). [Loungrides]

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