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 are 2 curios for this number that have not yet been approved by an editor.)
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