11's factors are 1 and 11.
12's factors are 1,2,3,4,6,1 and 12.
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The factors are 1 & 11 !
Since the numbers 11 and 12 share no common factors other than 1, the proper fraction 11/12 is already written in its simplest form.
The factors of 12 are: 1, 2, 3, 4, 6, 12 The factors of 66 are: 1, 2, 3, 6, 11, 22, 33, 66
The factors of 10 are: 1, 2, 5, 10 The factors of 11 are: 1, 11 The factors of 12 are: 1, 2, 3, 4, 6, 12 The factors of 13 are: 1, 13 The factors of 15 are: 1, 3, 5, 15 The factors of 16 are: 1, 2, 4, 8, 16 The factors of 17 are: 1, 17 The factors of 18 are: 1, 2, 3, 6, 9, 18 The factors of 19 are: 1, 19 The factors of 20 are: 1, 2, 4, 5, 10, 20
factors: 1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 198, 396 prime factors: 2(2), 3(2), 11