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What is the hcf and LCM of 1820 and 3510 using long factorization?
Wiki User
∙ 8y ago
2 x 2 x 5 x 7 x 13 = 1820
2 x 3 x 3 x 3 x 5 x 13 = 3510
2 x 5 x 13 = 130, the GCF
2 x 2 x 3 x 3 x 3 x 5 x 7 x 13 = 49140, the LCM
Wiki User
∙ 8y ago
Confidence Nonhlanhl...
Anonymous
Hcf 130
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Adv. as long as you try all primes starting with the smallest you will get the correct answer. Disadv. Time consuming. If you factor using larger numbers you can work faster, but you must remember to factor those as well. Ex Write the prime factorization of 270. You can easily see that 10 x 27 = 270 but neither is prime. Now factor both 10 and 27. 10 = 2 x 5 both are prime 27 = 3x9 but 9 is not prime so 27 = 3x3x3 all are prime So the prime factorization is 2x5x3x3x3 Faster if you just think and don't have to type it all to explain.
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