Methods

Number definitions

There are no set definitions for the meaning of specific digits. Common examples include: [5]

0. Everything or absoluteness. All
1. Individual. Aggressor. Yang.
2. Balance. Union. Receptive. Yin.
3. Communication/interaction. Neutrality.
4. Creation.
5. Action. Restlessness.
6. Reaction/flux. Responsibility.
7. Thought/consciousness.
8. Power/sacrifice.
9. Highest level of change.
10. Rebirth.

Alphabetic systems

There are many numerology systems which assign numerical value to the letters of an alphabet. Examples include the Abjad numerals in Arabic, the Hebrew numerals, Armenian numerals, and Greek numerals. The practice within Jewish tradition of assigning mystical meaning to words based on their numerical values, and on connections between words of equal value, is known as gematria.

1= a, j, s 2= b, k, t 3= c, l, u 4= d, m, v 5= e, n, w 6= f, o, x 7= g, p, y 8= h, q, z 9= i, r

and are then summed.

Examples:
3,489 → 3 + 4 + 8 + 9 = 24 → 2 + 4 = 6
Hello → 8 + 5 + 3 + 3 + 6 = 25 → 2 + 5 = 7

A quicker way to arrive at a single-digit "summation" is simply to take the value modulo 9, substituting a 0 result with 9 itself.

Different methods of calculation exist, including Chaldean, Pythagorean, Hebraic, Helyn Hitchcock's method, Phonetic, Japanese, Arabic and Indian.

The examples above are calculated using decimal (base 10) arithmetic. Other number systems exist, such as binary, octal, hexadecimal and vigesimal; summing digits in these bases yields different results. The first example, shown above, appears thus when rendered in octal (base 8):
3,48910 = 66418 → 6 + 6 + 4 + 1 = 218 → 2 + 1 = 38 = 310

Alphabetic systems

There are many numerology systems which assign numerical value to the letters of an alphabet. Examples include the Abjad numerals in Arabic, the Hebrew numerals, Armenian numerals, and Greek numerals. The practice within Jewish tradition of assigning mystical meaning to words based on their numerical values, and on connections between words of equal value, is known as gematria.

Pythagorean system

In some cases, in a type of numerological divination, the name and birth date of an individual would be used to analyze and define personality and propensities, based upon a system implemented by the philosopher Pythagoras