Errand Chronicle 31011 · Entry #1

Pyresh's Formula I

Objective
Found a trace of Pyresh. Let's solve Pyresh's Formula written on it.
Solve the secret formula left behind by Pyresh and type it in the chat window;
Dialogue
Trace of Pyresh Dialogue
Pyresh left behind a piece of his realizations.
Numbers are written in what looks to be a riddle of sorts.
After a sequence of numbers follows a question mark.
It's as if someone wanted their formula to be solved by another.
12 = 1121 / 1312 = 123121
1121 = ?
Trace of Pyresh Dialogue (Alt)
12 = 1121 / 1312 = 123121
1121 = ?
Trace of Pyresh Completion
It seems the number on the right was
counting the number on the left.
Your head hurts a bit,
but you've solved Pyresh's Formula.
Other Errands in This Chronicle

9 further errands share this chronicle — the same travelers, the same stretch of road.

Details
Chronicle31011
Entry1
Quest Giver
Turn-in
Summary
It seems the number on the right was
counting the number on the left.
Your head hurts a bit,
but you've solved Pyresh's Formula.