11113...17973 (49-digits)

This number is a prime.

                       111133910 0003310000 3710435877 2699711170 9411117973

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1111339100003310000371043587726997111709411117973 is the smallest 49-digit emirp that when arranged in a 7x7 matrix, produce sixteen 7-digits emirps, one per row, one per column and the one for each of the two main diagonals. Found by Emmanuel Vantieghem. [Rivera]