Fibonacci Numbers/Examples/F173
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Example of Fibonacci Number
The Fibonacci number $F_{173}$ is:
- $638 \, 817 \, 435 \, 613 \, 190 \, 763 \, 972 \, 389 \, 505 \, 493$
It can be factorized as:
- $6 \, 260 \, 874 \, 567 \, 713 \times 102 \, 033 \, 258 \, 884 \, 875 \, 061$
Historical Note
David Wells reports in his Curious and Interesting Numbers of $1986$ that Michael A. Morrison and John Brillhart found the prime factors of $F_{173}$ in just over $800$ seconds, but fails to provide a source to corroborate this.
Research is ongoing for further details.