Because the product of factors of numbers will give the number itself. So, required number will be (2) * (3) * (5) * (7) = 210. Hence, the smallest number having four different prime factors will be 210. smallest number having four different prime factors.
Is 4 a prime number Yes or no?
The number 4 is not prime, since it has three divisors ( 1 , 2 , and 4 ), and 6 is not prime, since it has four divisors ( 1 , 2 , 3 , and 6 ). Definition: A composite number is a whole number with more than two integral divisors. So all whole numbers (except 0 and 1 ) are either prime or composite.
Is 4 a prime number Why?
No, 4 is not a prime number. The number 4 is divisible by 1, 2, 4. For a number to be classified as a prime number, it should have exactly two factors. Since 4 has more than two factors, i.e. 1, 2, 4, it is not a prime number.
Is there a list of divisibility rules for prime numbers?
Below is a List of Divisibility Rules sorted by number. Additionally, if an alternative method is available (albeit it would be hard most of the time), the description for that number has a pink background. Every integer is divisible by one. All prime numbers are divisible by one, too. (Proof) Every integer is divisible by one.
Are there any numbers that are not divisible by 5?
Examples of numbers that are not divisible by 5 . To be divisible by 5, the last digit must be 0 or 5. So 11 fails this test. To be divisible by 5, the last digit must be 0 or 5. So -19 fails this test. What is the divisibility by 6 rule?
Is the number 15 divisible by all prime divisors?
Input : x = 15, y = 6 Output : No Explanation : 15 = 3*5. 6 = 2*3, 15 is not divisible by 2 which is a prime divisor of 6. Hence, answer is “No”. Recommended: Please try your approach on {IDE} first, before moving on to the solution.
Is the first number x divisible by all prime divisors of Y?
We need to find if the first number x is divisible by all prime divisors of y. Input : x = 120, y = 75 Output : Yes Explanation : 120 = (2^3)*3*5 75 = 3* (5^2) 120 is divisible by both 3 and 5 which are the prime divisors of 75. Hence, answer is “Yes”.
