My phone number is a 7-digit prime that shows up in the digits of pi. My husband's phone number is a 7-digit prime that shows up in the digits of e. We met when training students for the Maths Olympiad. The fess is how nerdy we both are.
@fesshole wait, isn’t it safe to assume any sequence of 7 digits will appear at some point in the digits of both pi and e?
@Gaelan @fesshole it is generally believed that all finite digit sequences will show up somewhere in the decimal expansions of pi and e, but not actually proven AFAIK.

@Gaelan @fesshole now I check further, while it's not confirmed that *every* digit sequence shows up somewhere in pi, looks like it has been confirmed that every 7-digit sequence can be found in the first 1 billion digits.

So you are absolutely right. I got distracted by the more general question, apologies!