20222...88881 (42-digits)

This number is a prime.

20 2224444444 4666666666 6868888888 8888688881

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The smallest almost-all-even-digits prime containing one zero and 2*d times every nonzero even digit d. [Loungrides]

Submitted: 2010-01-15 12:42:36; Last Modified: 2010-01-15 18:44:27.