103 (Number)

103 is a natural number that lies between 102 and 104 in the sequence of integers. It is written in standard Arabic numerals as 103 and in Roman numerals as CIII.

103 is a prime number, meaning it cannot be divided by any number greater than 1 other than itself. Its only divisors are 1 and 103.

Mathematical Properties

103 and 101 are twin primes, since the difference between them is two. 103 is also an odd number and a number that has no divisors between 1 and itself.

The sum of the digits of 103 (1 + 0 + 3) is 4. When 103 is divided by two, the remainder is 1, which confirms that it is an odd number. In the base-ten numeral system, 103 is written with three digits: one hundred, zero tens, and three ones.

General Use

103 is used as an identifier in various contexts: year numbers (the year 103 in the Common Era), road numbers, emergency telephone numbers in some countries, and house numbers. These uses are conventional designations and have no particular mathematical significance.

Chemistry

The atomic number 103 denotes lawrencium (Lr), a synthetic element that is highly radioactive and belongs to the actinide series of the periodic table.