The first 2 SPSSs of this order were found by Ian Gambini in the 1990s. In 2013 Jim Williams found 1506176 SPSSs of this order. In 2014 Brian Trial found 670.
It is estimated that there are approximately 8.35 x 10^8 SPSSs in order 41.
The large number of files in this order makes for large files, the zipped tablecode file with over 1.5 million SPSSs (spsso41.txt.zip) is 123 Mb.