72951...12729 (41-digits)

This number is a prime.

7 2951234321 6125642781 8276412521 6343512729

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The smallest prime obtained by concatenation of the consecutive cubes 729 down to 1 and from 1 to 729 again. [Gupta]

Submitted: 2022-02-23 02:20:38; Last Modified: 2022-02-23 12:42:42.