2729
This number is a prime.
The smallest prime formed by concatenating two consecutive
double-digit odd numbers. Note that 2927 is also prime. [Loungrides]
The smallest prime whose reversal, sum of digits, and product of digits, are abundant numbers. [Loungrides]
Mars will be the closest to Earth as possible in 2729. [Nie]
(There are 4 curios for this number that have not yet been approved by an editor.)
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