View Compilation Error

0_0_33860805_11339.cpp: In function 'int main()':
0_0_33860805_11339.cpp:111:109: error: expected ';' before 'a'
             tt1 = tt1*(1 + prime[i] * prime[i] * ((qpow(prime[i], 2*a[i]) - 1) / (prime[i] * prime[i] - 1)))a;
                                                                                                             ^