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In Mathematics there is either

the Highest Common Factor

or

the Least Common Multiple

The Highest Common Factor involves prime factors, and finding which are shared by the numbers under consideration....

the prime factors of 91 are 7 and 13

the prime factors of 217 are 7 and 31

So, the Highest Common Factor of 91 and 217 is 7.

The Least Common Multiple also involves prime factors, and multiplying all of them together, only using once any which are common to both numbers

As the only shared prime factor is 7 we need to multiply 7, 13 and 31 together - which gives 2,821.

Q: What is the highest common multiple of 91 and 217?

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The Greatest Common Factor (GCF) of 91 and 217 is: 7

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

The greatest common multiple of any set of integers is infinite.

It is infinity but the lowest common multiple is 5005 and its highest common factor is 7

The highest common factor of the numbers 28, 84 and 91 is 7.

Related questions

The Greatest Common Factor (GCF) of 91 and 217 is: 7

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

The greatest common multiple of any set of integers is infinite.

It is infinity but the lowest common multiple is 5005 and its highest common factor is 7

The least common multiple of 91 , 13 = 91

1 is the highest common factor of 91 and 251.

The least common multiple of 26 , 91 = 182

The Least Common Multiple (LCM) of (7,91) is 91.

The Least Common Multiple of 10 and 91 is 910.

The least common multiple of 91 , 512 = 46,592

The Least Common Multiple (LCM) for 56 91 is 728.

The Least Common Multiple (LCM) for 91 14 is 182.