The book is now available! 31399...39731 (100-digits)
(just those submitted by Andersen)
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                                            3139971973 7866347113 9144865157
7269485891 7594191229 3874459187 7656925789 7479749143 1942288961 1373939731

Just showing those entries submitted by 'Andersen': (Click here to show all)

+ Write this reversible prime in a 10-by-10 square. All rows, columns, and main diagonals are distinct reversible primes. This means the reverse 100-digit prime could have been submitted instead!
3139971973
7866347113
9144865157
7269485891
7594191229
3874459187
7656925789
7479749143
1942288961
1373939731
[Andersen]




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