22111...66661 (51-digits)

This number is a prime.

2 2111133004 4115522223 3334422663 3555544446 6005566661

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The smallest prime obtained by laying down 27 valid domino pieces. Omitted piece 0-1. Found by G. Daddario. [Rivera]

Submitted: 2019-06-04 13:06:39; Last Modified: 2019-06-04 21:50:23.