Seventy-three

Seventy-three (73, LXXIII) is the natural number following seventy-two and preceding seventy-four. It is the 21st prime number. The previous is seventy-one, with which it comprises a twin prime. It is also a permutable prime with thirty-seven.

Seventy-three is also:

• The atomic number of tantalum.
• The total number of books in the Holy Bible in the Catholic version if the Book of Lamentations is counted as a book separate from the Book of Jeremiah.
• The designation of USA Interstate 73, a freeway in North Carolina.
• The registry of the U.S. Navy's nuclear aircraft carrier USS George Washington (CVN-73), named after U.S. President George Washington.
• In baseball, the homerun record set by Barry Bonds in 2001.

This article is about the number. For the year AD 73, see 73.