31415...28841 (38-digits)

This number is a prime.

                                   31415926 5358979323 8462643383 2795028841

INT(π*10^n) is prime for n = 0, 1, 5 and 37. INT(π*10^37) = 31415926535897932384626433832795028841 and is the sum of two squares a^2+b^2. Note that a + b is prime. [Goins]