Well, honey, the common factors of 13 and 26 are 1 and 13. That's it, plain and simple. Not much to work with there, but hey, at least you got your answer.
The GCF of 143 and 169 is 13. One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them. The factors of 143 are 1, 11, 13, and 143. The factors of 169 are 1, 13, and 169. The common factors are 1 and 13. Therefore, the greatest common factor is 13.
11 and 13 share no common factors aside from 1.
13 and 19 share no common factors aside from 1.
The factors of 39 are 1, 3, 13, and 39. The factors of 65 are 1, 5, 13, and 65. The common factors are 1 and 13.
-4 and -9
The factors of 26 are 1, 2, 13 and 26. For them to be common, they need to be compared to another set of factors.
The common factors of 13 and 39 are: 1 and 13
The highest four digit number with 13 and 7 as common factors is 9919, which is equal to 13 x 763 and 7 x 1417.
Since 13 is a factor of 39, all of its factors are common.
The factors of 13 are 1 and 13. For them to be common, they need to be compared to another set of factors.
Well, honey, the common factors of 13 and 26 are 1 and 13. That's it, plain and simple. Not much to work with there, but hey, at least you got your answer.
(+)13 does NOT equal (-13). However, their modulii (plural of modulus) are equal at '13' . It is written as as a value -13 < +13 However the modulii is written as |-13| = |+13| note the use of vertical lines, because the numerical value is the same.
13
13 is a prime number. The only common factors are 1 and 13.
The GCF of 143 and 169 is 13. One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them. The factors of 143 are 1, 11, 13, and 143. The factors of 169 are 1, 13, and 169. The common factors are 1 and 13. Therefore, the greatest common factor is 13.
13