Is 100 a Fibonacci Number?

100 is a Fibonacci Number if it is in the Fibonacci Sequence.

The Fibonacci Sequence starts with 1, 1, followed by the sum of the last two numbers in the sequence.

Looking at the Fibonacci Sequence, we found that 100 is not in the Fibonacci Sequence and 100 is therefore not a Fibonacci Number.

The closest Fibonacci Number below 100 is 89 and the closest Fibonacci Number above 100 is 144.

Fibonacci Numbers
Look up another number to see if it is a Fibonacci Number.

Is 101 a Fibonacci Number?
Now you know if 100 is a Fibonacci Number or not. Go here to see if the next number on our list is a Fibonacci Number.