Definition:Deletable Prime

Definition

A deletable prime is a prime number which has the property that deleting digits one at a time in some order gives another prime number each time.

Sequence

The sequence of deletable primes begins:

$2$, $3$, $5$, $7$, $13$, $17$, $23$, $29$, $31$, $37$, $43$, $47$, $53$, $59$, $67$, $71$, $73$, $79$, $83$, $97$, $103$, $107$, $\ldots$

Examples

$410 \, 256 \, 793$ is a Deletable Prime

$410 \, 256 \, 793$ is a deletable prime.

Also see

• Results about deletable primes can be found here.

Sources

• Weisstein, Eric W. "Deletable Prime." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/DeletablePrime.html