11213...16091 (48-digits)

This number is a prime.

                        11213199 3721701232 0944497862 4311050313 2049216091

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The smallest emirp that is the concatenation of nine consecutive Mersenne prime exponents, i.e., (11213, 19937, 21701, 23209, 44497, 86243, 110503, 132049, 216091). [Bajpai]