Find the HCF of the following numbers using prime factorisation method of 1638;2788and 1820
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Hcf of 1638= Positive Integer factors of 1638 = 2, 3, 6, 18, 7, 126, 13, 1638 divided by 2, 3, 3, 7, 13, gives no remainder. They are integers and prime numbers of 1638, they are also called composite number.
Hcf of 2788= (2,108; 2,788) = 68 = 2^2 × 17: greatest (highest) common factor (divisor), calculated.
Hcf of 1820= The orange divisor(s) above are the prime factors of the number 1,820. If we put all of it together we have the factors 2 x 2 x 5 x 7 x 13 = 1,820.
Hcf of 2788= (2,108; 2,788) = 68 = 2^2 × 17: greatest (highest) common factor (divisor), calculated.
Hcf of 1820= The orange divisor(s) above are the prime factors of the number 1,820. If we put all of it together we have the factors 2 x 2 x 5 x 7 x 13 = 1,820.
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