28799...94029 (530-digits)

This number is a probable-prime (likely to be a prime but we have not (re-)proven it on this site).

Largest non-titanic prime, that is the product of a repunit number and all its truncations plus eight, i.e., 111111111111111111111111111111111*11111111111111111111111111111111....*1111*111*11*1 + 8. [Gupta]