SPSSs Order 60;

In 1967 Geoffrey Morley found the first 4 SPSSs of order 60; 616457A, 1770961A, 3082285A and 5629849A.

In 1999 Ian Gambini found 2 SPSSs of order 60; 1097A and 1192A.

In 2014 Brian Trial found 5082 order 60 SPSSs.

In 2018 Bernard Moss found 1015 order 60 SPSSs using a transform applied to Brian Trial's discoveries.

In 2019, 2020 Bernard Moss found thousands more SPSSs in order 60, some quite small, including the 9 smallest found so far; 874A, 903, 910A, 924A, 926, 945A, 978, 998A, 999A.

There are 29288 known SPSSs of Order 60. Files provided are;

• text file spsso60.txt of tablecodes for download.
• text file spsso60.bkp of bouwkampcodes for download.
• pdf file spsso60.pdf for viewing and download.