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Is 385 a prime number?
A prime number has only 2 factors: 1 and itself. 385 has a 5 in the ones place, so 5 is also a factor. Since 5 X 77 = 385, 77 is a factor, too. There might be other factors. 385 is a composite number because it has more factors than 1 and itself.
What is a factor tree for 385?
As a product of its prime factors: 3*5*5*5 = 375
Which is the biggest factor of any number?
The number divided by its smallest prime factor.
Let S be the set of numbers from 1-100 whose smallest prime factor is 7 How many numbers are in S?
There are two numbers, 7 and 49, whose smallest prime factor is 7 in the set of numbers from 1 to 100.
Greatest common factor of 42 and 165?
The greatest common factor (GCF) is often also called the greatest common divisor (GCD) or highest common factor (HCF). Keep in mind that these different terms all refer to the same thing: the largest integer which evenly divides two or more numbers.The greatest common factor of 42 and 385 is 7
