hirondelle52 Bonjour,224/2 =112112/2 =5656/2 =2828/2 =1414/2 =7=> 2*2*2*2*2*7280/2 =140140/2 =7070/2 =3535/5 =7=> 2*2*2*5*7en commun:2*2*2*7 =56224/56 =4280/56 =5224/280= 4/5420/2 =210210/2 =105105/3 =3535/5 =7=> 2*2*3*5*7882/2 =441441/3 =147147/3 =4949/7 =7=> 2*3*3*7*7en commun: 2*3*7 = 42 même technique que pour a8800/2 =4400 4400/2 =22002200/2 =11001100/2 =550550/2 =275275/5 =5555/5 =11=> 2*2*2*2*2*5*5 *113775/5 =7575/5 =151=> 5*5*1515*5=25même technique 1056/2 = 528528/2 =264264/2 =132132/2 =6666/2=33 33/3 =11=> 2*2*2*2*2*3*111596/2 =798798/2 =399399/3 =133133/7 =19=> 2*2*3* 7*192*2*3 = 12même technique