r= x^72 - x^36 + 1 q= (x^106 - 2*x^98 + x^90 + 2*x^88 - 4*x^80 + 2*x^72 - x^70 + 2*x^62 - x^54 - 2*x^52 + 4*x^44 - 2*x^36 + x^34 - 2*x^26 + x^18 + 2*x^16 + 4*x^8 + 2)/8 P= 8*q_k27method67 v= x