23571...16771 (36-digits)

                                     235711 1317192329 3137414347 5359616771

+ 235711131719232931374143475359616771/(33) is a prime formed from the concatenation of consecutive primes up to 71. Note that the reversal of 33 is 72 and the resulting number ends with 73, the next prime. [Luhn]

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