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Because they have only two factors whereas composite numbers have more than two factors

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Q: Why are 2 3 5 and 7 the first four prime numbers?
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Related questions

What are the first 4 mersenne prime numbers?

The first four Mersenne prime numbers are 2, 3, 5, and 7.


The first four square numbers are 2 3 5 7?

The first four PRIME numbers are 2,3,5,7. If you square these you get 4,9,25,49. The first four squared numbers could be 1,4,9,16


What are the first four positive prime numbers?

2 4 6 8


What is the product of the first 4 prime numbers?

The first four prime numbers are 2, 3, 5, 7. The product of these numbers is 2 x 3 x 5 x 7 = 210


What is the rule for this sequence of numbers 2 3 5 7?

Those are the first four prime numbers.


What is the product of the first four positive prime numbers?

It is: 2*3*5*7 = 210


What is twice the sum of the first four prime numbers?

2+3+5+7 = 17 2*17 = 34


What composite number is equal to the product of the first four prime numbers?

Sure thing, honey. The first four prime numbers are 2, 3, 5, and 7. Multiply those bad boys together and you get 210. And wouldn't you know it, 210 is a composite number because it can be divided by numbers other than 1 and itself. Math can be a real hoot sometimes, can't it?


What is the product of the first four prime numbers?

2 x 3 x 5 x 7 = 210


What is the first prime numbers?

2 is the smallest prime number.


What is the only prime number that is the sum of four consecutive prime numbers?

17 is the only prime number that is the sum of four consecutive prime numbers. 2 + 3 + 5 + 7 = 17


What is the smallest number greater than zero that the first four prime numbers as well as the first four composite numbers evenly divide?

Okay I think it is 2520. First 4 prime numbers are; 2 3 5 7 First 4 composites are; 4 6 8 9 I put the composites into there prime factor form. 4=2*2 6=2*3 8=2*2*2 9=3*3 Therefore the prime factor of this number had to have three twos, two threes. It also had to have a 5 and a 7 because of the prime numbers. So the index form was; ?=2*2*2*3*3*5*7 ?=2520