283

Number

$283$ (two hundred and eighty-three) is:

The $3$rd of a triplet of consecutive integers which have the property that if their digits are multiplied, and the process repeated on the result until only $1$ digit remains, that final digit is the same for all three:

$2 \times 8 \times 3 = 48$; $48 \times 6 = 32$; $3 \times 2 = 6$

The smaller of the $4$th pair of primes whose prime gap is $10$:

$293 - 283 = 10$

The larger of the $19$th pair of twin primes, with $281$

The $22$nd left-truncatable prime after $2$, $3$, $5$, $7$, $13$, $17$, $23$, $37$, $43$, $47$, $53$, $67$, $73$, $83$, $97$, $113$, $137$, $167$, $173$, $197$, $223$

The $52$nd lucky number:

$1$, $3$, $7$, $9$, $13$, $15$, $21$, $\ldots$, $219$, $223$, $231$, $235$, $237$, $241$, $259$, $261$, $267$, $273$, $283$, $\ldots$