How many incandescent bulbs (and light bulb changes) do you need to last as long as a single LED?

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  4. How efficient is an LED compared to a CFL or an incandescent bulb?
A typical incandescent light bulb last about 1000 hours so if you think about how many hours a LED light bulb has, you'd probably need to change your light bulbs 50 to 100 times whereas a LED light bulb would only need to be changed once.