9876543211

This number is a prime.

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Equals 10^10 minus strings of one to nine 1's: 10000000000-1-11-111-1111-11111-111111-1111111-11111111-111111111. [Silva]

Submitted: 2012-06-17 12:40:12; Last Modified: 2018-04-13 03:14:24.