Numerology and the study of Number's.

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Numerology is any study of the purported divine, mystical or other special relationship between a number and some coinciding observed (or perceived) events.

It has many systems and traditions and beliefs. Numerology and numerological divination by systems such as isopsephy were popular among early mathematicians, such as Pythagoras, but are no longer considered part of mathematics and are regarded as pseudomathematics or pseudoscience by modern scientists.

Today, numerology is often associated with the paranormal, alongside astrology and similar divinatory arts.
Despite the long history of numerological ideas, the word "numerology" is not recorded in English before c.1907.  Wiki

333 — The Ascended Masters are near you, desiring you to know that you have their help, love and companionship. Call upon the Ascended Masters often, especially when you see the number 3 patterns around you. Some of the more famous Ascended Masters include: Jesus, Moses, Mary, Quan Yin and Yogananda.

Images @ Eminpee Fotography