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RossTo find the highest common factor (HCF) of 81, 243, and 1215, we first need to find the prime factorization of each number. The prime factorization of 81 is 3^4, 243 is 3^5, and 1215 is 3^5 * 5. To find the HCF, we look for the highest power of each prime factor that appears in all the numbers. In this case, the highest power of 3 that appears in all three numbers is 3^4, so the HCF of 81, 243, and 1215 is 81.
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What are the factors and prime factors of 1215?
factors: 1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215prime factors: 3(5), 5
What goes into 243 evenly?
All factors of 243 are: -243, -81, -27, -9, -3, -1, 1, 3, 9, 27, 81, and 243.
What are the factors of 243?
The positive integer factors of 243 are 1, 3, 9, 27, 81, and 243 The factor pairs of 243 are (1, 243), (3, 81), and (9, 27).
What is the hcf of 81 and 27?
It is: 27
Factors of 243?
The factors of 243 are: 1 3 9 27 81 243
