191

This number is a prime.

Just showing those entries submitted by 'Gaydos': (Click here to show all)

+ The smallest prime number in the smallest prime decade in which the product of the four prime numbers is a reverse prime. [Gaydos]

+ The smallest prime number that falls between two happy numbers. [Gaydos]

+ 191 lucky numbers each have the same number of digits as its lucky index. [Gaydos]

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