Prime Curios!: 1289

1289
(another Prime Pages' Curiosity)

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This Sophie Germain prime is also a twin prime, and the smallest prime having distinct or increasing digits and exactly 5 permutations of its digits prime. [Hasler]

Concatenate (left-to-right) the 1st, 2nd, 8th, and 9th prime and you will get another prime, i.e., 231923. [Loungrides]

(There is one curio for this number that has not yet been approved by an editor.)