173

Number

$173$ (one hundred and seventy-three) is:

The $4$th balanced prime after $5$, $53$, $157$:

$173 = \dfrac {167 + 179} 2$

The $8$th inconsummate number after $62$, $63$, $65$, $75$, $84$, $95$, $161$:

$\nexists n \in \Z_{>0}: n = 173 \times \map {s_{10} } n$

The $10$th of $11$ primes of the form $2 x^2 + 11$:

$2 \times 9^2 + 11 = 173$ (Previous ... Next)

The $11$th prime number after $53$, $71$, $103$, $107$, $109$, $149$, $151$, $157$, $163$, $167$ which cannot be expressed as either the sum of or the difference between a power of $2$ and a power of $3$

The $13$th Sophie Germain prime after $2$, $3$, $5$, $11$, $23$, $29$, $41$, $53$, $83$, $89$, $113$, $131$:

$2 \times 173 + 1 = 347$, which is prime.

The $19$th left-truncatable prime after $2$, $3$, $5$, $7$, $13$, $17$, $23$, $37$, $43$, $47$, $53$, $67$, $73$, $83$, $97$, $113$, $137$, $167$

The $34$th positive integer $n$ such that no factorial of an integer can end with $n$ zeroes.