FACTOID # 126: Iceland has many, many more tractors per 1000 hectares of cropland than any other nation - more than twice that of the next highest country, Slovenia.
 
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Encyclopedia > Fibonacci prime

A Fibonacci prime is a Fibonacci number that is prime. The first few Fibonacci primes are In mathematics, the Fibonacci numbers form a sequence defined recursively by: In other words: one starts with 0 and 1, and then produces the next Fibonacci number by adding the two previous Fibonacci numbers. ... In mathematics, a prime number (or prime) is a natural number greater than one whose only positive divisors are one and itself. ...

2, 3, 5, 13, 89, 233, 1597, ...

Note that every Fibonacci number is prime only if its index is prime (n=p) except n=4. The sufficient condition is false, however.

 

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