19531891183017701711

This number is a prime.

                                                       1953189118 3017701711

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The smallest prime formed from reverse concatenation of five consecutive triangular numbers, i.e., 1953, 1891, 1830, 1770, and 1711. [Gupta]

Submitted: 2005-05-03 06:36:15;   Last Modified: 2008-01-30 11:28:00.
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