726 is the start of a record-breaking run (smallest set) of six consecutive integers (from 726 to 731) with a distinct number of prime factors (from 1 to 6).
726 is 1011010110 in base (binary), 10401 in base 5, 600 in base 11, and 141 in base 25.
726 is the sum of nonconsecutive factorial numbers: 726 = 3! + 6! = 6 + 720.
Introduced in 1952, the IBM 726 was one of the first practical high-speed magnetic tape systems for electronic digital computers.
Introduced in 1952, the IBM 726 was one of the first practical high-speed magnetic tape systems for electronic digital computers.
Source: Prime Curios!
