More than 2000 years ago, Chaldean numerology revealed clear correlations between numbers and planets. These correlations were later adopted in the 16th century by the Pythagorean numerologist Heinrich Cornelius Agrippa.

By the early 20th century, Chaldean numerologists linked planetary vibrations to zodiac signs through their ruling planets. For example, the numbers 1 and 4 are associated with the Sun, which has its domicile in Leo. Consequently, Leo is attributed the numbers 1 and 4. Similarly, Mercury has its domicile in Gemini and Virgo, so both signs are assigned the number 5. This gives us the following table:

This correlation is very strong, as the nature of the planets is closely tied to their domicile signs, and as a result, the planetary numbers are also strongly connected to the signs. Furthermore, 500 years ago, Heinrich Cornelius Agrippa also demonstrated a direct connection between zodiac signs and numbers:

The origin of this table remains unknown. It is unclear whether it is Agrippa’s innovation, a Pythagorean enhancement of the Chaldean philosophy of numbers predating Agrippa, or whether Agrippa took this description from contemporary Chaldean numerologists.

These values are at least twice as weak as the indirect connection through the planets and domiciles. Most Chaldean numerologists do not use them. However, such values are present for each sign. The scheme of direct numerical connections to signs follows certain similar numerological principles that also underpin the foundational Chaldean correlations between numbers and planets.