Are you seeking to unravel the mysteries of the hcf of 777 and 1147? Look no further! Our in-depth guide will empower you with the knowledge and strategies to master this mathematical concept.
In mathematics, the hcf (highest common factor) of two numbers is the largest number that divides both numbers without leaving a remainder. For instance, the hcf of 777 and 1147 is 143.
HCF(777, 1147) = 143
Factor | 777 | 1147 |
---|---|---|
1 | + | + |
3 | + | + |
7 | + | - |
11 | - | + |
21 | - | - |
33 | - | - |
143 | + | + |
| HCF | 143 | |
1. Prime Factorization Method:
Break down both numbers into their prime factors:
777 = 3 x 3 x 7 x 11
1147 = 7 x 163
The hcf is the product of the common prime factors:
HCF(777, 1147) = 7 x 1 = 143
Prime Factorization | 777 | 1147 |
---|---|---|
3 | + | - |
7 | + | + |
11 | + | - |
163 | - | + |
| Common Prime Factor | 7 | |
2. Euclidean Algorithm:
Use repeated subtraction to find the hcf:
1147 - 777 = 370
777 - 370 = 407
370 - 407 = -37
Since the last non-zero remainder is 37, the hcf is:
HCF(777, 1147) = 37
Iteration | Division | Remainder |
---|---|---|
1 | 1147 ÷ 777 | 370 |
2 | 777 ÷ 370 | 407 |
3 | 370 ÷ 407 | -37 |
| HCF | 37 | |
According to the Mathematical Association of America, the hcf concept is fundamental to number theory and has applications in cryptography, computer science, and engineering.
Q: What is the hcf of 777 and 1147?
A: The hcf of 777 and 1147 is 143.
Q: What methods can I use to find the hcf?
A: The prime factorization method and Euclidean algorithm are commonly used methods.
Q: How is the hcf useful in real-life applications?
A: The hcf has applications in engineering, cryptography, and computer science.
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