The book is now available! 4708
(just those submitted by Firoozbakht)
Prime Curios!
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The nth Prime Page will now find any of the first 2.623˙1015 primes or π(x) for x up to 1017.

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

+ 4708 = pi(4!+7!+0!+8!). Note that 4708 is the second and only multi-digit number with this property. [Firoozbakht]

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