A132475 Numerical equivalents for the 23 Latin letters, according to Tartaglia.

500, 300, 100, 500, 250, 40, 400, 200, 1, 51, 50, 1000, 90, 11, 400, 500, 80, 70, 160, 5, 10, 150, 2000

Offset: 1

Author

N. J. A. Sloane, Nov 19 2007, based on email from David Garber and on material from the Roman Numerals web site mentioned above, especially a posting by Peter T. Daniels. Thanks to M. F. Hasler for finding this web site

Keywords

• nonn
• base
• fini
• full

Examples

			A 500
B 300
C 100
D 500
E 250
F 40
G 400
H 200
I 1
K 51
L 50
M 1000
N 90
O 11
P 400
Q 500
R 80
S 70
T 160
V 5
X 10
Y 150
Z 2000
		

References

• A. R. Bradford, Crossword Lists, Collins.
• Florian Cajori, A History of Mathematical Notations (1928, repr. Dover, 1993), para. 60.
• G. Friedlein, Die Zahlzeichen und das elementare Rechnen der Griechen und Roemer, Erlangen, 1869.
• Tartaglia, General Trattato di Numeri, Part I (1556), folios 4, 5.

Links

• Recreational Groups, Roman Numerals, Postings by several authors.