Factors, multiples and primes (Edexcel GCSE Maths): Flashcards

Whole numbers dividing into another exactly, no remainder

1 and the number itself

Pairs that multiply together to give the original number

A factor of two or more numbers

Numbers in a times table (multiply by 1, 2, 3...)

Number in times tables of two or more numbers

Has exactly two factors: 1 and itself

No, it only has one factor (itself), not two

2, 3, 5, 7, 11, 13, 17, 19, 23, 29

Finding the prime factors of any number

Shows when prime factors repeat, e.g., $3^2$ for 3 × 3

1, 2, 3, 4, 6, 12

$1 \times 12$, $2 \times 6$, $3 \times 4$

$5 \times 2 \times 3^2$