The maximum length of a credit card number is 19 digits, with the maximum length of the account number field being 12 digits (initial six-digit issuer identifier minus the final digit check number). Each issuer has 1 trillion possible account numbers.
The oldest known blue oak is in Sequoia National Park and estimated to be about 400 years old. Deciduous oaks native to the eastern United States are also long-lived. White oak (Quercus alba) is the longest-lived, with an average life of 300 years and maximum life span of 600 years in USDA zones 3b through 8b. Southern red oak (Quercus falcata) grows in USDA zones 7 through 9 and reaches 275 years.
Before, pine trees in North America had been called the oldest at 4,000 to 5,000 years old. Here it is, in all its lonely glory: the world's oldest living tree. Found in western Sweden, scientists believe that this spruce is 9,550 years old. Before, pine trees in North America had been called the oldest at 4,000 to 5,000 years old. According to the Guinness Book of World Records, a bristlecone pine named Methuselah in California's White Mountains was aged 4,768. But this discovery changes that view dramatically. Just to be clear about this: the tree itself is new.