"A.", "B.", and "C." (or, rarer, Roman numerals: I, II, III, IV), in Arabic, thus "", then "", then "", not the first three letters of the modern order. The abjad numbers are also used to assign numerical values to Arabic words for purposes of numerology. The common Islamic phrase ('In the name of Allah, the most merciful, the most compassionate' – see Basmala) has a numeric value of 786 (from a letter-by-letter cumulative value of 2+60+40+1+30+30+5+1+30+200+8+40+50+1+30+200+8+10+40). The name Allāh by itself has the value 66 (1+30+30+5). Letter values A few of the numerical values are different in the alternative Abjad order: For four Persian letters these values are used: Similar systems The Abjad numerals are equivalent to the earlier Hebrew numerals up to 400. The Hebrew numeral system is known as Gematria and is used in Kabbalistic texts and numerology. Like the Abjad order, it is used in modern times for numbering outlines and points of information, including the first six days of the week. The Greek numerals differ in a number of ways from the Abjad ones (for instance in the Greek alphabet there is no equivalent for , ). The Greek language system of letters-as-numbers is called isopsephy. In modern times the old 27-letter alphabet of this system also continues to be used for numbering lists. See also Eastern Arabic numerals Western Arabic numerals Kufic Hurufism 'Ilm al-Huruf (science of letters) Gematria Isopsephy Katapayadi system References External links Overview of the abjad numerological system Sufi numerology site Numerical Value of an Arabic Text as per "Abjad" Calculation - www.alavibohra.org Online Abjad Calculator in Arabic , Hebrew , Persian - With Reverse Abjad Numeral to Text Numerals Collation