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:-) In the other direction they are called nested primes.

I have a follow-up planned for this: can you guess the question?

Of course I disguise what things are called - otherwise everyone would just search for the answer.

I also don't always know the answer! ;-) Sometimes there will be challenges that are like little projects.

I did accidentally found out smth during the solving process:)
is it to find the largest emirp ^^?

Well, you found that already, didn't you? :-)

Yes :)
accidentally XD

But that's good, isn't it?!

The next question will be fun!

But you're now a famous app dev!!

XDDD thx for the attention~
im ready for the next one >:3