The largest known Fibonacci emirp.
2^1597 + 2^1583 + 2^1579 + ... + 2^11 + 2^7 + 2^5 + 2^3 + 2^2 + 1 is prime. [Patterson]
The largest of 29 consecutive primes of the form 2n2 + 29 for n = 0 to 28. [Terr]
There exist positive values of n such that the square root of 1597n2 + 1 is an integer, but you'll need more than a hand-held calculator to find even the smallest solution.
Jacopo Peri (1561-1633) wrote the first work to be called an opera today, Dafne (circa 1597, now lost). Note that 1597 is the arithmetic mean between 1561 and 1633.
The largest known Fibonacci prime with only odd digits. It
has also more distinct odd digits than the others. [Capelle]
To link to this page use http://primes.utm.edu/curios/page.php?number_id=828
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