# Highly composite numbers

On the opposite extreme from a prime number is a **highly composite number**. A prime has the least quantity of factors, namely two. A highly composite number is one which has a greater number of factors than any smaller number. In other words, a highly composite number * initiates* an

*increase*in quantity of factors over that of any lesser number.

For example, 120 has more factors than any smaller number, and also has more factors than numbers lesser than 180. 180, in turn, has an additional two more factors than 120. And 180 has more factors than numbers less than 240. And 240 has more factors than numbers lesser than 360.

Additionally, the unifying number for all highly composite numbers is 12. This is because of three facts:

- the
*initiation*above 6 is always at multiples of twelve but not always at multiples of 6; - the initiation span from 12 to 60 is unbroken; and
- composite equivalence is unbroken from 60 to 120. These three facts together imply a spike graph beginning with 1 and ending with 120, in which there are two sequences of six spikes, in which the
*60 spike*functions both as the final of the first sequence and as the initial of the second sequence, and the second sequence for which only its first and final numbers are initials.

## Further reading

https://danielsmathnotes.wordpress.com/144-and-the-bridge-between-two-mathematical-worlds/