Beatus de Liébana (isopsephia)

Beatus de Liébana (named for St. Beatus de Liébana) is a system of converting Latin letters to defined numeric values, based on Greek-to-Latin correspondences, as observed by John Opsopaus. Unlike in Greek isopsephy or Hebrew gematria, where the conversions are based on classical utilisation of every glyph as both a letter and a numeral, Latin only utilised a limited set of letters in combinations as ordinary numbers (I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1000), and consequently the conversions are not based on routine equivalencies but rather assumed correspondences with other languages.

Conversion Table

Letter	Value
A, a	1
B, b	2
C, c	3
D, d	4
E, e	5
F, f	6
G, g	7
H, h	8
I, i	9
J, j	9
K, k	10
L, l	20
M, m	30
N, n	40
O, o	50
P, p	60
Q, q	70
R, r	80
S, s	90
T, t	100
U, u	200
V, v	200
W, w	200
X, x	300
Y, y	400
Z, z	500

Tools

• https://hatch.kookscience.com/cipher/iso.php?cipher=la_4