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math tools > > prime search SuperKids Is It Prime?Use the form below to perform prime number searches. Simply type in a positive integer (no commas or decimals), and click on the 'Is It Prime' button. Please note that this search tool is limited to the first 10,000 prime numbers.What is a Prime Number?A prime number is an integer greater than one, whose only positive divisors are itself and one. For example, the number 7 has only one pair of factors (7,1). Integers with additional positive divisors are called 'composite numbers'. For example, the number 8 has two factor pairs (8,1) and (2,4). Prime numbers are important in many aspects of math -- and in many aspects of the modern world. For example, many cryptographic systems used for secure Internet transactions make use of the fact that large numbers are exceptionally difficult and time consuming to factor. |
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