this can be done by the prime factorization method
5x43
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The four factors of 215 are 1, 5, 43, and 215.The factor pairs of 215 are 1 x 215 and 5 x 43.The proper factors of 215 are 1, 5, and 43 or,if the definition you are using excludes 1, they are 5 and 43.The prime factors of 215 are 5 and 43.The distinct prime factors of 215 (listing each prime factor only once) are 5 and 43.The prime factorization of 215 is 5 x 43.
215 = 5 . 43 326 = 2 . 163 with all four numbers prime. Since 215 and 326 do not have prime factors in common, their largest common factor is 1. For that reason, 215 and 326 are said to be co-prime or mututally prime. I think you mean greatest common factor.215 factors to [5 43]326 factors to [2 163]no common prime factorsAnswer is 1.■
The factors of 215 are: 1 5 43 215
factors: 1, 3, 5, 15, 25, 43, 75, 129, 215, 645, 1075, 3225prime factors: 3, 5(2), 43
215 and 216 are co-prime.