1,122,659

Number
$1 \, 122 \, 659$ (one million, one hundred and twenty-two thousand, six hundred and fifty-nine) is:


 * The $87 \, 359$th prime number


 * The $1$st term of the smallest Cunningham chain of the first kind of length $7$:
 * $1 \, 122 \, 659$, $2 \, 245 \, 319$, $4 \, 490 \, 639$, $8 \, 981 \, 279$, $17 \, 962 \, 559$, $35 \, 925 \, 119$, $71 \, 850 \, 239$