13171...91713 (78-digits)

This number is a prime.

                                                                    13171923
2931374143 4753596167 7173798389 9789837973 7167615953 4743413731 2923191713

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

+ Formed by ascending and descending concatenation of all the non-palidromic two-digit primes. [Silva]

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