Pi Problem

Let a number be $a$ , where its number of digits is $b$ .

Let there be a sequence $c_n$ where $c_n$ is the nth decimal digit of $\pi$ . (i.e. A000796 on OEIS, but the first term, which is 3, is $c_0$ ).

Let pi-numbers be numbers where $a = \overline{c_ac_{a+1}...c_{a-b+1}}$

You are given that the first pi-number is 1. (...)

Find the second pi-number.