B=(2+1)(22+1)(24+1)...(22016+1)+1
B=(2-1)(2+1)(22+1)...(22016+1)+1
B=(22-1)(22+1)...(22016+1)+1
B=(24-1)(24+1)...(22016+1)+1
...........................
B=(22016-1)(22016+1)+1
B=(22016)2-1+1=42016
B=(2+1)(22+1)(24+1)...(21006+1)+1
B=(2-1)(2+1)(22+1)...(21006+1)+1
B=(22-1)(22+1)...(21006+1)+1
B=(24-1)(24+1)...(21006+1)+1
...........................
B=(22016-1)(21006+1)+1
B=(21006)2-1+1=41006