
Mem is the 13th letter of the Hebrew alaphbet. It has a numerical value of 40. It means "water", or "chaos".
So far we have: Alaph, Bet, Gimmel, Dalet, Hey, Vav, Zayin, Chet, Tet, Yod, Kaf, Lamed, Mem
The Hebrew alaphbet:
-has 22 letters
-is read and written from right to left
-there are no caps, no uppercase or lowercase
-each letter has a numerical value, and a meaning