Introduction Let x be an integer.
On an otherwise idle 266MHz DEC Alpha computer, the original program tested, on the average, an interval of approximately 317 million integers each second. Elementary improvements of the search algorithm, the most important of which was suggested by Eric Roosendaal , raised this number to around 370 million. The search effort started in August 1996 with two 133MHz and two 266MHz DEC Alpha computers. Around 14.4 CPU years was used in the search. Our program also determines all maximum excursion and stopping time record-holders occurring inside the search interval.