Factors of 43
The factors of 43 are the numbers that divide it exactly. Finding factors is the first step in simplifying fractions and factoring expressions.
A prime page: the factor list holds exactly two entries — 1 and 43 — with nothing living between them. The pairing column shows the only split that exists, 1 × 43 = 43. The largest prime factor is 43 itself, and every factor together sums to 44. Two different primes share no factor except 1, which is why the GCF of two primes is always 1 — and why a fraction whose top and bottom are both prime cannot be simplified at all.
| Factor | Pairing |
|---|---|
| 1 | 1 × 43 = 43 |
| 43 | 43 × 1 = 43 |
Frequently asked questions
What are the factors of 43?
The factors of 43 are 1, 43 — that is 2 factors in total.
How do you find factors of 43?
Test each number from 1 up to 43: if it divides 43 with no remainder, it is a factor. Pair test — every factor pairs with a cofactor, like 1 × 43 = 43.
Why do factors matter for simplifying fractions?
Simplification divides both top and bottom by their greatest common factor — so a shared factor between two numbers, like you can find in the tables above, makes the fraction smaller and cleaner.