823

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Number

$823$ (eight hundred and twenty-three) is:

The $143$rd prime number.

The larger of the $32$nd pair of twin primes:

$823 - 821 = 2$

The $46$th left-truncatable prime after $2$, $3$, $5$, $7$, $\ldots$, $443$, $467$, $523$, $547$, $613$, $617$, $643$, $647$, $653$, $673$, $683$, $743$, $773$, $797$

The $51$st long period prime after $7$, $17$, $19$, $23$, $29$, $\ldots$, $701$, $709$, $727$, $743$, $811$, $821$

Also see

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