199

This number is a prime.

Just showing those entries submitted by 'Homewood': (Click here to show all)

The largest member in a set of twin primes generated by the formula n^2 + n(2n + 15) +/- 1 for n = 1 to 6. [Homewood]

(There are 2 curios for this number that have not yet been approved by an editor.)