16180...08161 (71-digits)

This number is a prime.

                                                                           1
6180339887 4989484820 4586834365 6381118365 6343868540 2848498947 8893308161

Just showing those entries submitted by 'Gupta': (Click here to show all)

The largest palindromic prime, less than a googol, formed from the reflected decimal expansion of the golden ratio. [Gupta]