The Number 13: Properties and Meanings
is a Prime Number
can be Partitioned
can be Partitioned 7
times with each term no larger than 2
can be Partitioned 21
times with each term no larger than 3
can be Partitioned 39
times with each term no larger than 4
can be Partitioned 57
times with each term no larger than 5
can be Partitioned 71
times with each term no larger than 6
can be Partitioned 82
times with each term no larger than 7
can be Partitioned 89
times with each term no larger than 8
can be Partitioned 94
times with each term no larger than 9
can be Partitioned 97
times with each term no larger than 10
can be Partitioned 99
times with each term no larger than 11
can be Partitioned 100
times with each term no larger than 12
is the number of + signs needed to write the Partitions
is a Fibonacci Number
is a Centered Square Number
is a Centered 12-gonal Number
is a Delannoy Number
The hypotenuse of the Pythagorean 5
The 13 Archimedean Solids
space groups are Monoclinic.
The Chemical Element
Aluminum has an atomic number of 13
The sacred cord of Druids has thirteen segments.
There are thirteen lunations in the year.
The Sumerians used a zodiac including 13
constellations and 26
The thirteen gates of the Human
body of the woman: 2
nostrils, the mouth, 2
breasts, the navel, the anus, the urethra and the vagina.
The card deck includes 13
The Jewish sage Moses Maimonides established 13
principles of the Jewish faith.
The Chinese abacus consists of 13
columns of beads.
ancient Crystal Skulls
Eat not to dullness; drink not to elevation.
Speak not but what may benefit others or yourself; avoid trifling conversation.
Let all your things have their places; let each part of your business have its time.
to perform what you ought; perform without fail what you resolve.
Make no expense but to do good to others or yourself; i.e., waste nothing.
Lose no time; be always employ'd in something useful; cut off all unnecessary actions.
Use no hurtful deceit; think innocently and justly, and, if you speak, speak accordingly.
Wrong none by doing injuries, or omitting the benefits that are your duty.
Avoid extreams; forbear resenting injuries so much as you think they deserve.
Tolerate no uncleanliness in body, cloaths, or habitation.
Be not disturbed at trifles, or at accidents common or unavoidable.
Rarely use venery but for health or offspring, never to dulness, weakness, or the injury of your own or another's peace or reputation.
Imitate Jesus and Socrates.
going on 30
: The 13
The Year 13 AD
In the year 13
AD Tiberius made his triumphant procession through Rome after siege of Germany.
The year 13
AD was the last year of shijianguo era of the Chinese Xin Dynasty.