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if it has no other number that can divide into itself but itself ================================== Another contributor clarified: You have to determine whether there is any number ... besides '1' and the number under test itself ... that can divide evenly into the number under test. If you find even one, then it's not a prime. If there are none, then it's a prime.
Just go to a table of prime numbers, find the prime numbers, and add them.Just go to a table of prime numbers, find the prime numbers, and add them.Just go to a table of prime numbers, find the prime numbers, and add them.Just go to a table of prime numbers, find the prime numbers, and add them.
Prime factorization is when you find all the prime factors of a number.
Prime numbers are used to find the LCM of numbers Prime numbers are used to find the HCF of numbers Prime numbers are used to simplify fractions Prime numbers are used to find the LCD of fractions
11 is already prime.