GCF (HCF) of 40 and 165

"Greatest Common Factor" Calculator

What is the Greatest Common Divisor of 40 and 165?

Answer

GCF (HCF) of 40 and 165 is

Common factors: 1, 5

5 divides both: 40 ÷ 5 = 8, 165 ÷ 5 = 33 — and 8 and 33 share no factor but 1, so no larger number divides both.

40 = 2³ × 5

165 = 3 × 5 × 11

Prime	40	165	Lowest power
2	2³	—	—
3	—	3	—
5	5	5	5
11	—	11	—

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

GCF = 5

More with these numbers

Related Calculations

GCF Table

Number 1	Number 2	GCF
40	70	10
40	72	8
40	80	40
40	84	4
40	85	5
40	90	10
40	96	8
40	100	20
40	110	10
40	120	40
40	125	5
40	130	10
40	144	8
40	155	5
40	160	40
40	165	5
40	180	20
40	210	10
40	220	20
40	240	40
40	245	5
40	250	10
40	260	20
40	265	5
40	275	5
40	310	10
40	315	5
40	320	40
40	325	5
40	330	10

FAQ

What is the Greatest Common Divisor of 40 and 165?

GCF (HCF) of 40 and 165 is 5

How to find the GCF of 40 and 165?

You can find the GCF of 40 and 165 by listing all factors of both numbers and picking the greatest common one, or by prime factorization. The GCF of 40 and 165 is 5.

What prime factors do 40 and 165 share?

The prime factorizations of 40 and 165 have 5 in common, and multiplying those shared primes gives 5 — exactly the greatest common factor.

How does the GCF reduce the fraction 40/165?

Divide the numerator and the denominator by the GCF 5: 40 ÷ 5 = 8 and 165 ÷ 5 = 33. So 40/165 in lowest terms is 8/33.

GCF (HCF) of 40 and 165

What is the Greatest Common Divisor of 40 and 165?

More with these numbers

Related Calculations

See Also

GCF Table

FAQ

What is the Greatest Common Divisor of 40 and 165?

How to find the GCF of 40 and 165?

What prime factors do 40 and 165 share?

How does the GCF reduce the fraction 40/165?

See Also

Number 1	Number 2	GCF
40	70	10
40	72	8
40	80	40
40	84	4
40	85	5
40	90	10
40	96	8
40	100	20
40	110	10
40	120	40
40	125	5
40	130	10
40	144	8
40	155	5
40	160	40
40	165	5
40	180	20
40	210	10
40	220	20
40	240	40
40	245	5
40	250	10
40	260	20
40	265	5
40	275	5
40	310	10
40	315	5
40	320	40
40	325	5
40	330	10

Number 1	Number 2	GCF
40	70	10
40	72	8
40	80	40
40	84	4
40	85	5
40	90	10
40	96	8
40	100	20
40	110	10
40	120	40
40	125	5
40	130	10
40	144	8
40	155	5
40	160	40
40	165	5
40	180	20
40	210	10
40	220	20
40	240	40
40	245	5
40	250	10
40	260	20
40	265	5
40	275	5
40	310	10
40	315	5
40	320	40
40	325	5
40	330	10

Number 1	Number 2	GCF
40	70	10
40	72	8
40	80	40
40	84	4
40	85	5
40	90	10
40	96	8
40	100	20
40	110	10
40	120	40
40	125	5
40	130	10
40	144	8
40	155	5
40	160	40
40	165	5
40	180	20
40	210	10
40	220	20
40	240	40
40	245	5
40	250	10
40	260	20
40	265	5
40	275	5
40	310	10
40	315	5
40	320	40
40	325	5
40	330	10