9999999900000001

This number is a prime.

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

+ The greatest prime factor of any 48-digit repdigit is 9999999900000001. [Green]

+ 9999999900000001 is the 8th known prime, p, such that (p)2 divides (p)3. Can you find other cases like this? [Green]

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