The book is now available! 33338...83333 (81-digits)
(another Prime Pages' Curiosity)
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                                                                3 3338333333
3383333333 3833333333 8333388888 8888333383 3333333833 3333338333 3333383333
+
    3 3 3 3 8 3 3 3 3
    3 3 3 3 8 3 3 3 3
    3 3 3 3 8 3 3 3 3
    3 3 3 3 8 3 3 3 3
    8 8 8 8 8 8 8 8 8
    3 3 3 3 8 3 3 3 3
    3 3 3 3 8 3 3 3 3
    3 3 3 3 8 3 3 3 3
    3 3 3 3 8 3 3 3 3 
The only plus sign prime of order 9. [Loungrides]




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