I can confirm, that it's

957496696762772407663

2.718281828459045235360287471352662497757247093699959574966967627724076630353547 ...

Check my code, but my C-skills are very limited:

https://bitcointalk.org/index.php?topic=5219708.0

It is not unusual to find this number so early in e, since the prime number distribution for small values like 10^21 to 10^22 is still dense.

But what is this number good for?