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**Prime numbers**: The numbers whose determinants are 1 and also the number itself is called Prime numbers.

**Example :**2,3,5,7,11,13,…

**2 is the smallest even prime number and 3 is the smallest odd prime number.The prime numbers up to 100 are :2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71,73, 79, 83, 89, 97Composite Number**: The number which contends leastern one element other than 1 and the number itself.

**Example**: 4,6,8,9,12,…

**Note : 1 is neither prime nor compowebsite.**

**Co-prime Numbers**: Two numbers that do not have a widespread aspect various other than 1.

**The initially 100 composite numbers are4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33,34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58,60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85,86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99, 100, 102, 104, 105, 106, 108,110, 111, 112, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125,126, 128, 129.Example :**35 and 39

**35 = 7 x 5 x 139 = 3 x 13 x 1Both 35 and also 39 are compowebsite numbers,the only factor common between them is 1.∴ 35 and also 39 are co-prime numbers.Some even more examples are**: 1) 2,3 ; 2) 3,4 3) 5,6 4) 8,13, and so on.

**Twin Primes**: Two prime number are well-known as twin primes of there is only one compowebsite number between them.

**The twin primes between 1 to 100 are3-5, 5-7, 11-13, 17-19, 29-31, 41-43, 59-61, 71-73Factors and Multiples**

**• Prime-Composite numbers• Divisibility rules• Prime Factorization• H.C.F or G.C.F• L.C.M• Application on LCMPrime and also compowebsite numbers to Factors and MultiplesNumber SystemHome Page**

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