Rating 1833(P5) what does P5 mean ?

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Sarcasmaholic

this was my first tournament of chess

it was a quick chess tournament 

I checked USCF website and it's showing that 1833(P5) is my rating 
what does P5 mean?

wanmokewan

Did you play 5 games? If you did, it probably means a provisional rating from 5 games.

Sarcasmaholic

oh yeah I played 5 games, thanks a lot