6121

This number is a prime.

+ The reversal of the sum of cubes of two consecutive triangular numbers (T3 and T4).The smallest prime of this form. [Bajpai]

+ There are 6121 prime numbers that have sums of reciprocals of digits of one or less. [Gaydos]

(There is one curio for this number that has not yet been approved by an editor.)

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