863

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Number

$863$ (eight hundred and sixty-three) is:

The $150$th prime number

The smaller of the $6$th pair of primes whose prime gap is $14$:

$877 - 863 = 14$

The $23$rd safe prime after $5$, $7$, $11$, $23$, $47$, $59$, $83$, $107$, $167$, $179$, $227$, $263$, $347$, $359$, $383$, $467$, $479$, $503$, $563$, $587$, $719$, $839$:

$863 = 2 \times 431 + 1$

The $53$rd long period prime after $7$, $17$, $19$, $23$, $29$, $\ldots$, $701$, $709$, $727$, $743$, $811$, $821$, $823$, $857$

Also see

• Previous  ... Next: Safe Prime
• Previous  ... Next: Prime Gaps of 14
• Previous  ... Next: Long Period Prime
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