Over dinner yesterday, Jason and I got to talking about Erdős numbers of various people. He didn’t know his, so I looked it up–the Mathematical Reviews database MathSciNet has a “compute collaboration distance” function in the author search. It produces output like this:
It’s not perfect, since it only computes distance based on papers in the MR database, i.e., mathematical papers. But, you can compute the distance not just to Erdős, but to anyone in the database: my Stanley number, for instance, is ≤6.