0388132人目の素数さん
2018/03/10(土) 00:31:00.58ID:LsHrYkQg(11-7)*(11-5)*(11-3)*(11-2)*(7-5)*(7-3)*(7-2)*(5-3)*(5-2)*(3-2)*(1/(11-7)+1/(11-5)+1/(11-3)+1/(11-2)+1/(7-5)+1/(7-3)+1/(7-2)+1/(5-3)-1/(5-2)+1/(3-2))*1/128*1/9=997
(11-7)*(11-5)*(11-3)*(11-2)*(7-5)*(7-3)*(7-2)*(5-3)*(5-2)*(3-2)*(1/(11-7)+1/(11-5)+1/(11-3)+1/(11-2)-1/(7-5)+1/(7-3)+1/(7-2)+1/(5-3)+1/(5-2)+1/(3-2))*1/128*1/9=877