73 (number)
(Redirected from Seventy-three)
73 (seventy-three) is a number. It comes after seventy-two, but before seventy-four. 73 is the 21st prime number. Its mirror, 37, is the 12th, and its mirror, 21, is the product of multiplying seven and three and in binary, 73 is a palindrome, 1001001, which backwards is 1001001.
73 (number) Media
73 as a star number (up to blue dots). 37, its dual permutable prime, is the preceding consecutive star number (up to green dots).
Lah numbers for n and k between 1 and 4. The sum of values with n = 4 and k = \{1,2,3,4\} is 73.
