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If it is divisible by 2, 3, 5 or 7 then it is not prime. Otherwise it is.

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Factoring and Multiples

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What is the prime factorization of 24

What is the prime factorization of 54

What is the prime factorization of 64

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Q: How do you know that any remaining number less than 100 must be prime?
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Related questions

A prime number less than 50 is 6 greater than the prime number just before it and 4 less than the prime number just after it what is the prime number?

37


How do you know if a number greater than 100 is a prime number?

You try dividing it by all prime numbers less than of equal to its square root.


What large prime number less than 50?

The largest prime number less than 50 is 47.


What is the smallest prime number that less than 100?

Two is the smallest prime number less than 100.


What is the largest prime number less than 100?

9797 is the largest prime number less than 100.


Which is the greatest prime number less than 48?

47 is the greatest prime number less than 48.


What is the greatest prime number less than 200?

The greatest prime number less than 200 is 199.


What is the largest prime number less than 37?

The lowest prime number that is less than 37 is 29.


What is the greatest prime number that is less than 200?

the greatest prime number less than 200 is 199


What is the largest prime number less than 70?

67 will be the largest prime number less than 70.


What is a number 1 less than a prime number?

It is a number 1 less than a prime number. There is nothing else that can be said about it that is invariably true.


Is a prime numbers less than 20?

19 is a prime number less then 20


What prime number less than 160 is prime?

How about: 157


What is the first prime number less than 100?

The first prime number that is less than 100 would be "97".


How many composite numbers less than 1500?

Of the 1499 numbers less than 1500, number 1 is neither prime nor composite, 239 are primes, and the remaining 1259 are composites.


What is the smallest prime number less than 50?

The smallest prime number is 2.


How do you know when you have all the factors of any number and justify any strategy?

What I do is start with 2's and 5's because they're easiest, since every even number is evenly divisible by 2 and every whole number ending in 5 or 0 is evenly divisible by 5. Then I start from 3 going through the prime numbers, dividing the remaining part of the number by each prime number on a calculator to see if the quotient is a whole number. I continue whittling away at the number in that way with each prime number in order until the quotient I get is less than the prime number divisor I tried; at that point I know that what's left over must be a prime number.


What prime number or number less than 100 are even?

There are 49 even numbers less than 100, but only the number 2 is an even prime number less than 100.


Is 887 a prime number?

Yes, 887 is a prime number. Recall that if a number is not prime then there exists a prime less than the square root of the number and this prime divides the number. So we need to check if the primes less than 30 divides 887 or not. These primes are 2,3,5,7,11,13,17,19,23,29.


What is the total number of prime numbers less than 100?

The total number of prime numbers less than 100 is 25.


What is the product of the first prime number less than 100?

97 is the largest prime number less than one hundred.


What is the product of the last prime number less than 100?

97 is the largest prime number less than one hundred.


What is the product of the smallest prime number and the greatest prime number less than 100?

The smallest prime number is 2 and the greatest prime number less than 100 is 97. The required product is: 2 x 97 = 194.


What are the lowest prime number and the highest prime number between 1 and 100?

The lowest prime number is 2. The highest prime number less than 100 is 97.


What are prime number that is less than10?

prime numbers that are less than10 = 2, 3, 5, 7