Prime Numbers are useful because they’re hard to find, especially BIG prime numbers, and Composite numbers with lots of factors are also useful: ever wondered why there are 60 minutes and a 24 ...

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As it turns out, prime numbers are incredibly important in math and even in fields as far-reaching as quantum physics and Internet security. They are often referred to as the building blocks of all ...

There are an infinite number of them, with all numbers greater than 1 being either a prime number or a composite of primes.