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The largest 4digit distinctdigit prime that yields
another when each digit d is repeated d times, i.e.,
9999999996666663331. [Loungrides]
The largest 4digit prime whose the reversal is the square of an emirp, i.e., 1369=37^2. [Loungrides]
(There are 2 curios for this number that have not yet been approved by an editor.)
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