Is 991 a Fibonacci Number?

991 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 991 is not in the Fibonacci Sequence and 991 is therefore not a Fibonacci Number.

The closest Fibonacci Number below 991 is 987 and the closest Fibonacci Number above 991 is 1597.

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

Is 992 a Fibonacci Number?
Now you know if 991 is a Fibonacci Number or not. Go here to see if the next number on our list is a Fibonacci Number.