Cryptology

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Hey bros, Im having some trouble with some homework. Im learning the RSA encryption algorithm and i have the values for each of the variables in this situation. I believe the formula to be c=m^e(mod n). the plaintext is "meetdawn" without the quotes of course. here are the values p=11,q=13,n=143,Phi=120, e=7,d=103.
the first letter "m" comes to the number 12 which means it stays the same right? but the letter "e" in "meetdawn" comes out to 82 which is the problem since we use 0-25 for the letters in the alphabet. can anyone help me out?