19219...31071 (72-digits)

This number is a prime.

19
2190188176 1671391331 3012910910 3100979491 8682797068 4944323128 2319131071

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The smallest happy prime formed from concatenation of happy numbers in reverse order. [Gupta]

Submitted: 2002-06-09 14:33:20; Last Modified: 2008-01-30 17:28:00.