Wednesday, November 21, 2012

Sum of Prime Numbers

Introduction to sum of prime numbers:

Sum means adding, Sum of prime numbers means we are going to see the addition of prime numbers.Sum is also known as the total or the addition. Addition is made by combining two or more numbers. Addition is just like joining two or more numbers. The word addition will be represented by the symbol (+). By using addition we can combine more objects and combine it into a larger form.

Prime Numbers:

Any natural number which has precisely two divisors. The following numbers are prime 2, 3, 7, 11, 13, .... Every natural number greater than 1 may be determined  uniquely into a product of prime numbers example: 18 = 2 x 3 x 3. In the case of a prime number p, the product has to be interrupted as p itself.

Here are some of the prime numbers:

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97......

Having problem with Positive and Negative Numbers keep reading my upcoming posts, i will try to help you.
 
Sum of Prime Numbers:

Example problem - 1:

Find the sum of given prime numbers 23 + 29 + 31 + 37 + 41 + 43

Solution:

We have to find the sum of

The sum of 23 + 29 = 52

52 + 31= 83

83 + 37 = 120

120 + 41= 161

161 + 43  = 204

Therefore the sums of the given prime numbers are 23 + 29 + 31 + 37 + 41 + 43 = 204

Example problem - 2:

Find the sum of given prime numbers 61 + 67 + 71 + 73 + 79 + 83 + 89 + 97

Solution:

We have to find the sum of

The sum of 61 + 67 = 128

128 + 71= 199

199 + 73 = 272

272 + 79= 351

351 + 83  = 434

434 + 89 = 523

523 + 97 = 620

Therefore the sums of the given prime numbers are 61 + 67 + 71 + 73 + 79 + 83 + 89 + 97 = 620

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