11110...01111 (25-digits)

This number is a prime.

                                                 11110 1110110101 1011101111

+ The smallest palindromic prime with middle digit 1 that is formed from the reflected successive concatenation of a decreasing number of repeated 1's and 0's. [Wesolowski]

(There are 2 curios for this number that have not yet been approved by an editor.)

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