19

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Summary

The number 19 is a prime number.

Below are some polynomials that give prime numbers for small input values, which give the value 19 for suitable input choice.

Polynomial	Degree	Some values for which it generates primes	Input value $n$ at which it generates 19
$n^{2} - n + 17$	2	all numbers 1-16, because 17 is one of the lucky numbers of Euler.	2