1091

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Number

$1091$ (one thousand and ninety-one) is:

The $182$nd prime number

The smaller of the $40$th pair of twin primes:

$1093 - 1091 = 2$

The $40$th emirp after $13$, $17$, $31$, $37$, $\ldots$, $941$, $953$, $967$, $971$, $983$, $991$, $1009$, $1021$, $1031$, $1033$, $1061$, $1069$

The equation $x^6 + 1091$ yields a composite number for all integer values of $x$ from $1$ to $3095$

Also see

• Numbers for which Sixth Power plus 1091 is Composite

• Previous  ... Next: Prime Number
• Previous  ... Next: Twin Primes
• Previous  ... Next: Emirp

Sources

• 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $1091$