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The nth Prime Page will now find any of the first 2.623˙10^{15} primes or
π(x) for x up to 10^{17}. Just showing those entries submitted by 'Madachy': (Click here to show all) The center of a 7by7 magic square of primes which stays a magic square (but with 7 primes) if the units digits of all entries are removed (i.e., 9341 becomes 934, ...). [Madachy]
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