This number is a prime.
2112333 3111396533 8635107311
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The prime formed by taking together the home primes (the first prime obtained after iterating the process of decomposing a number completely into its prime factors and concatenating the full prime decomposition) of all the composite digits 4, 6, 8, 9 which are 211, 23, 3331113965338635107, 311 respectively. [Beedassy]