How many prime numbers are there ?

With little bit of thinking we can say how many prime numbers are present, finite or infinite? Following small work out gives the answer.

Multiplication of first 'N' primer numbers + 1 will give you another prime number.

Eg) 2x3 +1 = 7 , a prime number.

2x3x5 + 1 = 31 , a prime number.

Note: It doesn't give immediate next prime number.

Like wise... multiplication of all known prime numbers + 1 will give another primer number. This implies that number of primer numbers is infinite.

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