5507
This number is a prime.
Just showing those entries submitted by 'Gaydos': (Click here to show all)
The smallest prime number for which the first ten digits of
its square root are pandigital (74.20916385). [Gaydos]
The smallest Honaker prime that produces another Honaker prime (7285507) when concatenated to its prime index (728). [Gaydos]
(There is one curio for this number that has not yet been approved by an editor.)
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