The Number 81
Prime Factors of 81=3x3x3x3.
81 can be Partitioned 41 times with each term no larger than 2.
81 can be Partitioned 588 times with each term no larger than 3.
81 is a Square Number(9x9).
81 is a Heptagonal Number.
81 is a 28-gonal Number.
81 is a Centered Octagonal Number.
The 81 stable Chemical Elements.
The Chemical Element Thallium has an atomic number of 81.
The 81 permutations of yin, yang and tao over 4 places.
Of the 117 scales of Chinese Dragons 81 are yang and benevolent.
The Year 81 AD
In the year 81 AD The Arch of Titus was constructed.
|
Random Number 
