# 138

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## Number

$138$ (one hundred and thirty-eight) is:

$2 \times 3 \times 23$

The $11$th sphenic number after $30$, $42$, $66$, $70$, $78$, $102$, $105$, $110$, $114$, $130$:
$138 = 2 \times 3 \times 23$

Its aliquot sequence terminates in $1$ after $177$ steps.