what are prime number and factor
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Prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, A prime factor is a factor of a number that is also a prime number. To express a whole number as a product of prime factors, try prime numbers in order of their magnitude. That is, first try to find out whether 2 is a factor of the given whole number or not.
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the numbers which are not divisibe to any number exept 1 and the number itself is known as prime numbers.
the numbers which are divisible to a particular number are the factors of that number.
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