199
This number is a prime.
Just showing those entries submitted by 'Silva': (Click here to show all)
The smallest prime showing a repeated composite digit. [Silva]
The sum of the digits of all three-digit palindromic primes. [Silva]
The smallest prime which is the sum of composite digits appearing in first primes up to itself. [Silva]
(There is one curio for this number that has not yet been approved by an editor.)
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