171617

This number is a prime.

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The larger of two emirps formed from the concatenation of the same integral edges of an acute-angled isosceles Heronian triangle. The smaller such emirp, (for the same triangle), is 161717. [Loungrides]

Submitted: 2012-05-01 07:03:31;   Last Modified: 2015-06-01 07:06:25.
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