3 and 57 9 and 19
57, 114, 171, 228, 285, 342, 399, 456, 513, 570, 627, . . .
% rate = 19% = 57/300 * 100% = 0.19 * 100% = 19%
513 is divisible by 3 because the sum of its digits is a multiple of 3. 171 is divisible by 3 because the sum of its digits is a multiple of 3. 57 is divisible by 3 because the sum of its digits is a multiple of 3. 3 x 3 x 3 x 19 = 513
19, 38, 57, 76, 95, 114, 133, 152, 171, 190 . . .
1, 3, 9, 19, 27, 57, 171, 513
Yes, 513 is composite. The factors of 513 are: 1, 3, 9, 19, 27, 57, 171, 513.
By: 1, 11, 47 and 517
3 and 57 9 and 19
The positive integer factors of 171 are: 1, 3, 9, 19, 57, 171
57, 114, 171, 228, 285, 342, 399, 456, 513, 570, 627, . . .
1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 135, 171, 285, 513, 855, 2565
57, 114, 171, 228, 285, 342, 399, 456, 513, 570.
57, 114, 171, 228, 285, 342, 399, 456, 513, 570, 627, 684, . . .
1 × 1,026 2 × 513 3 × 342 6 × 171 9 × 114 18 × 57 19 × 54 27 × 38
Infinite. The first ten are: 57, 114, 171, 228, 285, 342, 399, 456, 513, 570.
The factors of 171 are 1, 3, 9, 19, 57, and 171.