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The smallest primemirp that is also an invertible prime. [Bhattacharya] The larger of the only two fivedigit palindromic primes formed from two primes (19 and 991), one of which is the sum of the digits of the other. [Silva] The smallest palindromic prime that is the sum of 17 consecutive prime numbers (1109 + ... + 1231 = 19991). [Schuler]
(There is one curio for this number that has not yet been approved by an editor.)
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