10000...52301 (1000-digits)

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

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

10^999+8052301 is the smallest titanic prime that remains prime after each digit d is substituted by d^2. The new prime thus obtained is 10^1001+640254901. [Rivera]