This number is a prime.

+ Earliest case whereby a prime p divides the concatenation of prevprm(p), (p) and nextprm(p) or 143914471451 which is equal to 1447 * 99457133. [De Geest]

+ The smallest straight-digit prime that contains each of the straight digits (1, 4, and 7). [Gupta]

+ The smallest prime that is pandigital in Roman numerals, i.e., using each of the symbols I, V, X, L, C, D, and M at least once. [Post]

+ The very first literary work (titled "Yongbi och'on ka") to have used the present Korean alphabet was written in 1447. Reference: Cho D.I., Bouchez D. (2002) Histoire de la littérature coréenne. Fayard, p. 154. [Olry]

+ The number of delegates required by GOP rules to vote for Trump at the convention.

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

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