Which of the following numbers are co-prime?216 and 215

Dear Student

Factors of 216 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54
Factors of 215 are 1, 5, 43, 215
Common factors = 1
Since, their common factor is 1.
Hence, the given two numbers are co-prime

Thanks