9941

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Number

$9941$ (nine thousand, nine hundred and forty-one) is:

The $1226$th prime number

The index of the $22$nd Mersenne prime after $2$, $3$, $5$, $7$, $13$, $17$, $19$, $31$, $61$, $89$, $107$, $127$, $521$, $607$, $1279$, $2203$, $2281$, $3217$, $4253$, $4423$, $9689$:

$M_{9941} = 2^{9941} - 1 \approx 3 \cdotp 461 \times 10^{2992}$

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