102036 - An easy way to answer
N. Lygeros
An easy way to answer to your question is to use the Elliptic Curve Primality Proof and this link : t5k.org/top20/page.php You will see that the sixth number is a Lehmer-Ramanujan number. In fact we are trying to find new big primes different from the classical ones like Mersenne Numbers. For the moment, we have found a potential prime number with 900.969 digits. See the rank 188 in primenumbers.net/prptop/prptop. i.e. primenumbers.net/prptop/detailp