You can't google 9999999..99999999999999999999999
On a faintly related note, I once was calculating partitions, using a relatively inefficient method (memoization: if f(n,k) is the number of distinct ways to express n as the unordered sum of integers no greater than k, then f(n,k) = f(n-k,k) + f(n,k-1)).  My computer started to feel the strain in the thousands (this algorithm is O(n^2) in space and time).  I then googled for the partition of, say, 1034, which is:  91363785902248291467082481888195

I figured that chances are that no website will have that integer on there by accident.  Lo and behold, I found, among other results, a text file containing the partitions up to 10,000, presumably done with a more efficient algorithm (likely Euler's ridiculous pentagonal-number recurrence formula, which, memoized, is roughly O(n^1.5) in time and O(n) in space): http://oeis.org/A000041/b000041.txt