What is the pulse width of the output of a monostable trigger with a 555 timer?

Using 555 timer to form a monostable trigger, its output pulse width t=1.1RC. R usually takes the value of 1K ~ 10M ohms, C can take the value of

5000P - 1000 microfarads, can get the pulse width of 5 micro-microseconds - 15 minutes of the square wave signal.