21123...07311 (27-digits)

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]

Submitted: 2009-05-04 01:10:49;   Last Modified: 2009-05-04 17:14:03.
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