GCF (HCF) of 8 and 43

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What is the Greatest Common Divisor of 8 and 43?

Answer

GCF (HCF) of 8 and 43 is
1

Common factors: 1

Only 1 divides both: 8 and 43 share no prime factor.

Such numbers are called coprime (relatively prime); their LCM is just the product: 8 × 43 = 344.

8 = 23

43 — prime

Prime843Lowest power
223——
43—43—

— = power 0: the prime is not a factor of this number, so it cannot be in the GCF.

GCF = 1

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GCF Table

Number 1Number 2GCF
8204
8211
8248
8251
8262
8271
8284
8291
8302
8328
8331
8351
8364
8408
8422
8431
8444
8451
8488
8491
8502
8524
8531
8568
8591
8604
8631
8648
8728
8808

FAQ

What is the Greatest Common Divisor of 8 and 43?

GCF (HCF) of 8 and 43 is 1

How to find the GCF of 8 and 43?

You can find the GCF of 8 and 43 by listing all factors of both numbers and picking the greatest common one, or by prime factorization. The GCF of 8 and 43 is 1.

What prime factors do 8 and 43 share?

8 and 43 have no prime factor in common, so the only integer that divides both of them is 1 and their GCF is 1.

How does the GCF reduce the fraction 8/43?

Divide the numerator and the denominator by the GCF 1: 8 ÷ 1 = 8 and 43 ÷ 1 = 43. So 8/43 in lowest terms is 8/43.

Are 8 and 43 coprime?

Yes, 8 and 43 are coprime (relatively prime) because their Greatest Common Factor is 1.

See Also