43 is a Prime number. Its only prime factor is itself.
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The GCF of 6 and 43 is 1. Since 43 is prime, the GCF of 6 and 43 can only be 1.
The factors of 86 are:1, 2, 43, 86The factors of 129 are:1, 3, 43, 129The factors of 215 are:1, 5, 43, 215The common factors are:1, 43The Greatest Common Factor (GCF) is: 43
If there are no prime factors in common, the GCF is 1.
The factors of 19 are:1, 19The factors of 43 are:1, 43The Greatest Common Factor (GCF) is:1
The GCF of 43 and 100 is 1. Since 43 is prime and not a factor of 100, we know that the two numbers are coprime.