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GCSE Mathematics · key term
A factor of a number that is also a prime number.
Used by OCR
Specification 1.02b · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Foundation), Paper 4 (Higher), Paper 5 (Higher), Paper 6 (Higher)
Revise: Prime FactorisationThe base is the repeated prime factor and the index tells you how many times it occurs.
If the question asks for a product of prime factors, write a multiplication rather than a list, and use power notation when factors repeat.
Check a prime factorisation by multiplying the prime factors together to recover the original number.
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