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Huge Fibonacci

sinan · Math · 2015-01-31

Let Fib(N) be N-th fibonacci number with Fib(1)=1 and Fib(2)=1. What is Fib(Fib(1000000)) modulo 1000000007? [My timing: 2s]
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Problem preserved from RoseCode, with formatting adapted for this archive. CC BY-NC-SA 4.0

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