5753273

This number is a prime.

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The smallest prime-digit prime containing all the prime digits {2, 3, 5, 7} such that (a) replacing each digit by its square, i.e., (25492594499), (b) replacing each digit by its cube, i.e., (12534312527834327) and (c) replacing each digit by its fourth power, i.e., (62524016258116240181), a distinct prime is obtained in each case. [Bajpai]