9743
This number is a prime.
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The largest 4-digit prime with its digits in descending order, whose sum of cubes of digits is prime, i.e., 9^3+7^3+4^3+3^3=1163. [Loungrides]
Submitted: 2013-07-13 14:49:43; Last Modified: 2017-07-20 11:51:26.
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