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Find all the numbers less than 500 that have 3 as their only prime factor?
Wiki User
∙ 9y ago
3, 9, 27, 81, 243
Wiki User
∙ 9y ago
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Prime numbers between 180-220?
For this kind of question, I would suggest looking up a table of prime numbers. As an alternative, you can try to find factors for each of the numbers - if it has a factor, it is NOT a prime. For this range of numbers, testing for prime numbers up to 13 is appropriate. (If 17 is a factor of one of these numbers, the other factor is less than 17, so you would already have found it before you reach 17.)
What is a prime number factor of 42 less than 10 factor of 70?
2 and 7 are prime numbers less than 10 that are factors of 42 and 70.
What numbers less than 1000 have 3 as their only prime factor?
3,9,27,81,243,729
Which composite numbers less than 10 have exactly one factor that is prime?
1
When is the LCM of 2 numbers less than their product?
When they have a common prime factor. When their GCF is greater than 1.
Prime numbers between 180-220?
For this kind of question, I would suggest looking up a table of prime numbers. As an alternative, you can try to find factors for each of the numbers - if it has a factor, it is NOT a prime. For this range of numbers, testing for prime numbers up to 13 is appropriate. (If 17 is a factor of one of these numbers, the other factor is less than 17, so you would already have found it before you reach 17.)
What is a prime number factor of 42 less than 10 factor of 70?
2 and 7 are prime numbers less than 10 that are factors of 42 and 70.
What is the number whose prime factors are all prime numbers less then 10 and no factor is repeated?
210
What numbers less than 1000 have 3 as their only prime factor?
3,9,27,81,243,729
Find all the numbers less than 1000 that have 3 as their only prime factor?
3, 9, 27, 81, 243, 729
How do you find 3 prime numbers less than 30 whose product is 1955?
Use a factor tree. 1955 391,5 23,17,5
Which composite numbers less than 10 have exactly one factor that is prime?
1
When is the LCM of 2 numbers less than their product?
When they have a common prime factor. When their GCF is greater than 1.
What is last prime number to sift to find all prime numbers less than 1000?
31
What is the sieve of eratosthenes to find prime numbers less than 100?
To find prime numbers less than 100, the sieve of eratosthenes filters out 1 and all multiples of 2, 3, 5, and 7. All remaining numbers less than 100 are primes.
If the prime factors of a number are all the prime numbers less than 10 and no factor is repeated what is the number?
2,3,5,7.2*3*5*7=210
What are the numbers less than 500 that have 3 as their only prime factor?
3, 9, 27, 81, 243
