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(just those submitted by Green)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

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

+ The largest prime that can be the number of diagonals of an n-sided polygon (a pentagon in this case). [Green]

+ There are only 5 known regular polygons that can be constructed with Euclidean methods (i.e., by an unmarked straightedge and compass) that have a prime number of sides. [Green]

+ There are 5 known repunit primes. [Green]

+ 'A' is the only letter in the English alphabet that contains 5 non-straight angles (three acute and two obtuse). [Green]

(There are 3 curios for this number that have not yet been approved by an editor.)

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