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47 is a prime number from 1-100. 47 has 2 factors, 1 and 47. It is the fifteenth prime number, the fifteenth prime number from 1-100 and also the second Carol prime.
47

ProofsEdit

  • Yes — 47 can be divided by 1.
  • No — 47 cannot be divided by 2-46.
  • Yes — 47 can be divided by 47.


As an Exponent of Mersenne NumberEdit

247 - 1, which is the number 140,737,488,355,327, is divisible by numbers such as 2,351 and 4,513, and therefore not a prime number.

Relationship with other odd numbersEdit

The numbers beforeEdit

  • The previous odd number, 45, is not a prime number. It is divisible by 5 and 9.
  • The odd number previous to 45 is 43. 43 is a prime number.
    • 43 and 47 are four numbers apart; therefore, they are cousin primes.
  • The odd number previous to 43 is 41. 41 is a prime number.
    • 41 and 47 are six numbers apart; therefore, they are sexy primes.

The numbers afterEdit

  • The next odd number, 49, is not a prime number. It is the square number, being 72 = 49.
  • 51, the odd number following 49, is also not a prime number. It can be factored into 3 x 17.
  • 53, the odd number following 51, is a prime number.
    • 47 and 53 are six numbers apart; therefore, they are sexy primes.

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