You've probably heard of the Fibonacci sequence. After all, it's all over nature in flowers, pinecones, shells, and leaves. Most of us can name off the first dozen or so numbers in the sequence too

1, 1, 2, 3, 5, 8, 13, 21, 34, ...

But have you ever wondered what's beyond those tiny numbers? How about WAY beyond? Hold on to your seat, this is going to get crazy.

Behold, the thousandth Fibonacci number

1137969253983602722575237825522241755727459303537305131450866341766910925361 45985470146129334641866902783673042322088625863396052888690096969577173696 370562180400527049497109023054114771394568040040412172632376

or approximately

1.13796 x 10^209

Jeez! Physicists think there are only about 4 x 10^81 atoms in the observable universe. We over shot that by quite a bit.

``````(define (fibonacci-log-print n name)

(define (fibo-log-print a b p q count)
(cond ((= count 0) (print-this b name))
((even? count)
(fibo-log-print a b
(+ (* p p) (* q q))
(+ (* 2 p q) (* q q))
(/ count 2)))
(else (fibo-log-print (+ (* b q) (* a q) (* a p))
(+ (* b p) (* a q))
p q
(- count 1)))))

(fibo-log-print 1 0 0 1 n))

(fibonacci-log-print 100000000 "Data/log-hundred-million.txt")
``````

But that's peanuts compared to these enormous numbers: