10000...00267 (101-digits)

This number is a prime.

                                          1 0000000000 0000000000 0000000000
0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000267

The first prime number greater than a googol (10^100 + 267). Conceived and proven prime by G. L. Honaker, Jr. in 2005. (Googology Wiki named it the gooprol.) [Gabriel]