46910...23129 (92-digits)

This number is a composite.

                                                    46 9101415212 2252633343
5383946495 1555758626 5697477828 5868791939 4951061111 1511811912 1122123129

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Concatenating the first 43 semiprimes gives a 92-digit semiprime. This is the largest known example as of 1 February 2005. The question of which primes occur in concatenated consecutive semiprimes is not yet known. [Post]

Submitted: 2005-02-01 14:05:48;   Last Modified: 2019-01-22 06:32:12.
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