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Q: What numbers have a gcf of 1?

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If one of the numbers is a multiple of the other, the smaller number is the GCF. If the two numbers are prime numbers, the GCF is 1. If the numbers are consecutive, the GCF is 1. If the numbers are consecutive even numbers, the GCF is 2.

The GCF is 1.

The GCF is 1.

Prime and relatively prime numbers all have a GCF of 1.

Consecutive numbers have a GCF of 1.

The GCF of 2 numbers can be 1.

The GCF of all the composite numbers under 100 is 1. For e.g 4 & 9 are composite numbers & their GCF is 1, so if we take other composite numbers along with 4 & 9 the GCF will be 1.

The GCF of two or more prime numbers is 1 as for example the GCF of 19 and 23 is 1

The GCF of two prime numbers is 1.

numbers which are co prime have a GCF as 1 For example *2,3 *37,47 *23,24

The GCF is 1.

The GCF of these numbers is 1.

The GCF is 1.

The GCF is 1.

The GCF is 1.

The GCF is 1.

The GCF of 1 and any other number is 1.

Since both numbers are prime numbers, the greatest common factor (GCF) of 59 and 13 is 1.

49

The GCF is 1.

The GCF is 1.

GCF(343, 512) = 1; the numbers are coprime.

GCF(83, 100) = 1. The numbers are coprime.

The GCF of any two consecutive numbers is 1.

The two numbers are coprime so the gcf is 1.