✓ Accepted Answer
The reason role confuses so many people is that most explanations start in the middle — they describe the mechanics without establishing the underlying principle.
Here is what you actually need to understand: prime works because of checks and balances. When you internalise that, everything else follows logically.
In practice this means: you cannot skip the setup phase even when it feels tedious.
Most people copy solutions without adapting them. That is why they hit walls later.
What actually works better: question every assumption.
Research consistently shows that structured understanding beats brute-force trial and error by a wide margin.
by fabianthomas
The way this question is framed suggests you might be hitting the same wall most people hit with role.
I've helped a lot of people with this and there's almost always one of three root causes.
**Most likely culprit:** a misunderstanding of the core requirement. This accounts for roughly 50% of cases I have seen.
**Second possibility:** The approach you are using worked in a different context and you are trying to apply it where it does not fit. prime has specific conditions where it works well and conditions where it falls apart.
**Less common but worth checking:** a dependency or version mismatch that silently causes problems.
To narrow it down: eliminate variables one at a time rather than changing multiple things. That will tell you which of these you are dealing with.
by sunitadubey66773