155 (number)

155 (one hundred fifty-five) is a natural number. It comes after 154 and before 156.

In mathematics

  • 155 is a semiprime number. This means it is the product of two prime numbers. Its prime factorization is:

155=5×31

  • In Roman numerals, 155 is written as CLV.

Other facts

  • 155 is the police emergency telephone number in Turkey.
  • The year AD 155 was a year in the Julian calendar (used in ancient Rome). It was the year after AD 154 and before AD 156.

154 156






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