1013

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Number

$1013$ (one thousand and thirteen) is:

The $170$th prime number

The $38$th Sophie Germain prime after $2$, $3$, $5$, $11$, $23$, $29$, $41$, $\ldots$, $653$, $659$, $683$, $719$, $743$, $761$, $809$, $911$, $953$:

$2 \times 1013 + 1 = 2027$, which is prime.

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