246

This number is a composite.

Lowest number (and only one with 3 factors) whose unique prime factorization contains exactly the first 4 digits (246 = 2*3*41). [Hunter]

"Zhang’s bound" has been reduced to 246 (as of April 14, 2014).

246 and 255 are the smallest pair of consecutive sphenic numbers that have the same sum of digits. [Gaydos]