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It must be the product of the four smallest prime numbers.

2 x 2 x 2 x 2 = 16

2 x 3 x 5 x 7 = 210

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Q: What is the least number that has 4 prime factors?
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Related questions

Does any 3 digit number repeated to make a 6 digit number have to have at least 4 prime factors ex 359359 If yes then is there any pattern on how to figure that out?

abcabc=abc x 1001 1001 = 7 x 11 x 13 So such number as at least 4 prime factors: if abc is prime, then 4 factors only if abc is not prime then at least 4 factors


Is a composite number times a composite number always composite?

Yes. To be composite, the first number has at least 2 prime factors, the second number also has at least prime factors; the product of the two will have at least 4 prime factors, so it must be a composite number.


Must a composite number have at least two different prime factors?

No, 4 has one prime factor.


What is the least number that has 4 different prime factors?

Logically, the smallest number with 4 different prime factors would have to be the product of the smallest four prime numbers. So the smallest natural number with four different prime factors is 210 (2*3*5*7).


How many factors does a negative prime number have?

a negative prime number has 4 factors


Is 295 a prime number?

295 is not a prime number because it has a factor of 5, while prime numbers only have factors of itself and 1. 295 can be divded by 5, giving it at least 4 factors, and thus disqualifies it from fitting the definiton of a prime number.


Can a prime number have 4 factors?

No, a prime number has exactly two factors: 1 and itself.


Is there a prime number that is a multiple of 21?

No, it is not possible. Every multiple of 21 is a composite number. 21 is a composite number and its factors are 1, 3, 7 and 21(4 factors). Any multiple of 21 must have all the factors of 21. So, every multiple of 21 has at least 4 factors. And a prime number has only two factors so, any multiple of 21 can't be prime.


What are the factors of 4 and is it prime or composite?

The factors of 4 are 1, 2, and 4. The only prime factor of 4 is 2. The factors of 20 are 1, 2, 4, 5, 10, and 20. The prime factors of 20 are 2x2x5.


Is 3 and 4 prime or composite?

Three is prime, because the number 3 only has 2 factors 1 and itself and the number 4 has 3 factors 1,2, and 4 (you can tell if a number is prime when it has 2 factors and if a number has more than 2 it is composite)


What is the least number that has 2 and 3 and 4 as factors?

The least number that has 2, 3, and 4 as factors is 12.


Prime factors of 4?

Prime factorization is the finding which prime number multiply to get to make the original number. Factors of 4: 1, 2, 4 Prime Factorization: 2 2 x 2 = 4