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What is the least prime factor of 3?

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What is the least prime factor of 3?

So, a=6n−3 is the general form of the number that has least prime factor ‘3’.

How do you find the least prime factor?

Approach:

  1. Check if the number is divisible by 2 or not.
  2. Iterate from i = 3 to sqrt(N) and making a jump of 2.
  3. If any of the numbers divide N then it is the smallest prime divisor.
  4. If none of them divide, then N is the answer.

What is the least prime factor of A?

Then the least prime factor of a is 2; which is not 3 or 7. So a can not be an even number nor can b be an even number. Hence a+b can not be a prime number greater than 2 if the least prime factor of a is 3 and b is 7. Thus the answer is 2.

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What is the HCF of two prime numbers p and q?

If p and q are both primes, then their factors are 1 and the number itself. So the only common factor is 1. Hence HCF will be 1.

What is the least prime number?

2
2 is the smallest prime number. It also the only even prime number – all other even numbers can be divided by themselves, 1 and 2 at least, meaning they will have at least 3 factors.

What is least prime factor of odd number?

3
So, ‘3’ is a prime number. Hence, the smallest odd prime number is 3.

What does least prime number mean?

Correct answer: The definition of a prime number is a number that is divisible by only one and itself. A prime number can’t be divided by zero, because numbers divided by zero are undefined. The smallest prime number is 2, which is also the only even prime.

What is the prime factor of 3 and 5?

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Prime factorization of 3 and 5 is (3) and (5) respectively. As visible, there are no common prime factors between 3 and 5, i.e. they are co-prime.

What is the LCM of two prime number p and q?

The LCM of two prime numbers p and q (p > q) is 221.

What is the exponent of 3 in the prime factorization of 243?

The exponent will be 5.

What are the first 3 prime numbers?

The first five prime numbers: 2, 3, 5, 7 and 11. A prime number is an integer, or whole number, that has only two factors — 1 and itself.

What is the least prime factor of a +B?

If 3 is the least prime factor of number a and 7 is the least prime factor of number b, then the least prime factor of a + b, is The least prime factor of a+b has to be 2; unless a +b is a prime number greater than 2.

Can A+B be a prime number greater than 2?

Then the least prime factor of a is 2; which is not 3 or 7. So a cannot be an even number. Nor can b be an even number. Hence a+b can not be a prime number greater than 2 if the least prime factor of a is 3 and b is 7.

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What is the least prime factor of 50?

-> The least factor of p is 3. Let us assume that p is a product of 3 and x, where x is a prime number greater than 3. Say x is 5. Now: Now, (p+q) becomes 35+15 => 50. The least prime factor of 50 will 2, since 50 = 2*5*5. This is kind of brute-force approach, but I hope that my answer would suffice the query.