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Prime numbers A prime number has exactly two factors, itself and one. The first ten prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23 and 29.
Prime numbers A prime number has exactly two factors, itself and one. The first ten prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23 and 29.