The Number 91
Prime Factors of 91=7x13.
91 can be Partitioned 46 times with each term no larger than 2.
91 can be Partitioned 736 times with each term no larger than 3.
91 is a Triangular Number.
91 is a Hexagonal Number.
91 is a Centered Hexagonal Number.
91 is a Centered Nonagonal Number.
91 is a Centered 15-gonal Number.
91 is a Centered 30-gonal Number.
91 is a Square Pyramidal Number.
91 is a Centered Cube Number.
91, Parts of the Earth (Enochian)
The Year 91 AD
In the year 91 AD Pliny the Younger was named a tribunus plebis.
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