306 (number)

306 is the natural number following 305 and preceding 307.

In mathematics

 * 306 is an even composite number with three prime factors.
 * 306 is the sum of consecutive primes 71+73+79+83.
 * 306 is the 17th oblong number meaning that it is equal to 17*18.
 * 306 is an untouchable number meaning that it is unable to be equal to the sum of proper factors in any number.
 * There are 306 triangular numbers with 5 digits.

Other fields

 * The calendar years 306 AD and 306 BC.
 * 306 is the number for several highways across the countries of Canada, China, Costa Rica, Hungary, India, Japan, the Philippines, and the United States.
 * Martin Luther King Jr. was staying in Room 306 of the Lorraine Motel before he was assassinated.