Introduction to Prime Numbers for Children【電子書籍】[ Ryan Shuell ]

＜p＞A prime number (or a prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself. A natural number greater than 1 that is not a prime number is called a composite number. For example, 5 is prime because 1 and 5 are its only positive integer factors, whereas 6 is composite because it has the divisors 2 and 3 in addition to 1 and 6.＜/p＞画面が切り替わりますので、しばらくお待ち下さい。

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