The GCF is 1.
31. Factor each number: 62 = 2 x 31 217 = 7 x 31 155 = 5 x 31. The only factor that is common to all three numbers (and thus, the greatest common factor) is 31.
The greatest common factor of 91 and 217 is 7 (and the lowest common multiple is 2,821)The factors of 91 are: 1, 7, 13, 91The factors of 217 are: 1, 7, 31, 217The common factors are: 1, 7The Greatest Common Factor (GCF) is: 7The Greatest Common Factor (GCF) is: 7
No, they have the common factor 7.No, they have the common factor 7.No, they have the common factor 7.No, they have the common factor 7.
Factors of 77: 1, 7, 11, 77Factors of 31: 1, 31GCF (77, 31) = 1
Factors of 31: 1, 31Factors of 14: 1, 2, 7, 14GCF (31, 14) = 1
The greatest common factor of 21 and 31 is 1The greatest common factor (GCF) is often also called the greatest common divisor (GCD) or highest common factor (HCF). Keep in mind that these different terms all refer to the same thing: the largest integer which evenly divides two or more numbers.The factors of 21 are: 1, 3, 7, 21The factors of 31 are: 1, 31The common factors are: 1The Greatest Common Factor (GCF) is: 1
119 = 7 x 17; 217 = 7 x 31 so HCF = 7
The GCF is 7. The prime factors are: 77 = 7 x 11 217 = 7 x 31
1The highest common factor of both numbers is 7
7 is the greatest common factor.
The greatest common factor is 7
The greatest common factor of 7 and 28 is 7.