1777771

This number is a prime.

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A curious 7-digit Plateau prime. Note that its internal digits form a number that is the sum of the numbers formed from the internal digits of two smaller 7-digit Plateau primes, 1333331 and 1444441. [Angelou]

Submitted: 2000-07-09 02:59:07; Last Modified: 2008-01-30 17:28:00.