10000...00001 (101-digits)

This number is a prime.

                                          1 0000000000 0000000000 0000000000
0000000000 0000000030 3000000000 0000000000 0000000000 0000000000 0000000001

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

The smallest palindromic prime greater than a googol. [Gupta]