1,979,339,333

Number
$1 \, 979 \, 339 \, 333$ is:


 * The largest but one right-truncatable prime number, if $1$ is temporarily considered to be a prime number:
 * $1 \, 979 \, 339 \, 333$, $197 \, 933 \, 933$, $\ldots$, $19 \, 793$, $1979$, $197$, $19$ are all prime

Also see



 * Largest Right-Truncatable Primes allowing 1