Critères de divisibilité.

a b
a b
a b
a b
2 3 5
2
n2n
0 2
4 6 8 10450312 2
3
n3
3
n
n3
0 3 6 9 3
7+1+0+7+3+4+1+2+2=27
2 + 7 = 9
4
n4 2 ×d+u048d
u n = 1002352
2 + 2 = 12
2×1 + 2 = 4
5
0 5 30224065 12980
5
6
6 = 3 ×2 3 2
3 2
7
3n
132−1−3−2132−1 3
n
7
1,3,2,−1,−3,−2 0 7
6090 7
0×1 + 9×3 + 0×2 + 6×(−1) = 21
1×1 + 2×3 = 7
717255 7
5×1 + 5×3 + 2×2 + 7×(−1) + 1×(−3) + 7×(−2) = 0
8
n8 4 ×c+ 2 ×d+u0 8 c
d u
n= 30536
4×5 + 2 + 6 = 32
2×3 + 2 = 8
9
3 9
0 9 105903 9
1 + 0 + 5 + 9 + 0 + 3 = 18
1 + 8 = 9
10
0

11
7−1,1,−1n
11
−1,1 0
1126455 11
5×(−1) + 5×1 + 4×(−1) + 6×1 + 2×(−1) + 1×1 + 1×(−1) = 0
926695
5×(−1) + 9×1 + 6×(−1) + 6×1 + 2×(−1) + 9×1 = −11
1×(−1) + 1×1 = 0
1
12
12 = 4 ×334
3 4
13
7 1,−3,−4,−1,−3,4
2... 0 0 0 0 0 0 0 01 0 2 4 6 8
3... 1 1 1 1 1 1 1 1 10 3 6 9
4... 0 0 0 0 0 0 02 1 0 4 8
5... 1 1 1 1 1 1 1 1 10 5
7... 2 3 1 −2−3−1 2 3 1 0 7
8... 0 0 0 0 0 04 2 1 0 8
9... 1 1 1 1 1 1 1 1 10 9
10 ... 0 0 0 0 0 0 0 01 0
11 ... 1 1 −1 1 −1 1 −11−10
13 ... −4−3 1 4 3 −1−4−3 1 0
n
a b a
b
134 308