A Walk Across the Universe => Journey to the Edge of the Universe => Topic started by: leaf on Feb 27, 2021 03:03 pm
Title: 73
Post by: leaf on Feb 27, 2021 03:03 pm
73 73 is the 21st prime number. Its mirror, 37, is the 12th and its mirror, 21, is the product of multiplying 7 and 3 ... and in binary 73 is a palindrome, 1001001, which backwards is 1001001.