What is 4 7?

47 is a natural number following 46 and preceding 48.

  • Mathematics: In mathematics, 47 is the 15th prime number. It is also a Mersenne Prime exponent, meaning that 2<sup>47</sup> - 1 is a Mersenne prime. Additionally, 47 is an emirp, which is a prime number that results in a different prime when its digits are reversed (74 is also a prime number).

  • Atomic Number: In chemistry, 47 is the atomic number of Silver (Ag).

  • Popular Culture: The number 47 has gained some notoriety and appears frequently in various forms of media and internet culture, sometimes as a result of a mathematical coincidence or deliberate insertion. This prevalence has made it a minor internet meme. The video game character Agent 47 from the Hitman series is named accordingly.