# 151

Previous  ... Next

## Number

$151$ (one hundred and fifty-one) is:

The $36$th prime number

The $2$nd of the $12$th pair of twin primes, with $149$

The $8$th palindromic prime after $2$, $3$, $5$, $7$, $11$, $101$, $131$

The $31$st lucky number:
$1$, $3$, $7$, $9$, $13$, $15$, $21$, $\ldots$, $115$, $127$, $129$, $133$, $135$, $141$, $151$, $\ldots$

The $9$th palindromic lucky number:
$1$, $3$, $7$, $9$, $33$, $99$, $111$, $141$, $151$, $\ldots$

The $7$th integer after $0$, $1$, $2$, $4$, $8$, $121$ which is palindromic in both decimal and ternary:
$151_{10} = 12 \, 121_3$

The $7$th prime number after $53$, $71$, $103$, $107$, $109$, $149$ which cannot be expressed as the difference between a power of $2$ and a power of $3$