Question 18
Write 1400 as a product of powers of its prime factors.
Show your working clearly.
Edexcel IGCSE Math A Foundation 1.4.D Products of Prime Factors
Practise decomposing integers into prime factors and writing repeated primes with index notation.
How this is tested
- divide successively by prime numbers until every remaining factor is prime
- group repeated prime factors and write them using positive integer powers
- multiply the prime-power product to check it reproduces the original integer