Chill out dude you are on maximum overdrive; What is 199+37-20? Ohh, 37 and 199 are both primes, and greater than 2. Since that applies, Goldbatch’s Conjecture applies making the partial sum a nonprime. And, according to perfect cubes , combined with -20 and the partial sum of those 2 numbers, this equals 6 to the power of 3, making this the cube number 216.