Prime & Co-Primes
Classify natural numbers from their positive factors, handle the special case 1, and connect composite numbers with prime products.
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2 min
Prime and Composite Numbers by Factor Structure
Classify natural numbers from their positive factors, handle the special case 1, and connect composite numbers with prime products.
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Co-prime Numbers and the HCF Test
Decide whether a pair is relatively prime by finding its HCF, and distinguish pairwise coprimality from each number being prime.
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Consecutive Integers and Co-prime Reasoning
Prove that consecutive positive integers are co-prime and use the same difference test to reject or confirm proposed pairs.
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