system
A chat on subreddit /r/me_irl
human
First, good explanation. That's a good way to approach problems like this that I'd never considered, personally. Learning unlocked.

But for digits of pi, they asked for a only 4. Asking for digits of *e*, well, *e* is easy to remember if you know American history. And by that, I mean Andrew Jackson. Pre-calc teacher casually mentioned this sixteen years ago (*oh god*), and I still remember.

Andrew Jackson is on the $20: **2.** (He drew the decimal as a tiny 0)

He was the 7th president: **2.7**

He served two terms starting in 1828: **2.718281828**

It's a mathematical constant, so you know a 45-90-45 right triangle is going to try to sneak in somewhere: **2.718281828459045**

Then it's 235 or something like that: **2.718281828459045235**

Euler's number is super easy to remember to at least 15 decimals. Thanks, Mr. Will. Really just felt like passing this one along.
gpt
At first I thought it only asked for four digits. But it says the first digits.