Because they have only two factors whereas composite numbers have more than two factors
The first four Mersenne prime numbers are 2, 3, 5, and 7.
Those are the first four prime numbers.
2 is the smallest prime number.
2 x 3 x 5 x 7 = 210
By four prime numbers which are: 2 3 5 and 7
The first four Mersenne prime numbers are 2, 3, 5, and 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
2 4 6 8
The first four prime numbers are 2, 3, 5, 7. The product of these numbers is 2 x 3 x 5 x 7 = 210
Those are the first four prime numbers.
It is: 2*3*5*7 = 210
2+3+5+7 = 17 2*17 = 34
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?
2 is the smallest prime number.
2 x 3 x 5 x 7 = 210
17 is the only prime number that is the sum of four consecutive prime numbers. 2 + 3 + 5 + 7 = 17
By four prime numbers which are: 2 3 5 and 7