823,544

Number
$823 \, 544$ (forty-six thousand, six hundred and fifty-seven) is:


 * $2^3 \times 113 \times 911$


 * The $7$th Sierpiński number of the first kind after $2$, $5$, $28$, $257$, $3126$, $46 \, 657$:
 * $823 \, 544 = 7^7 + 1$