GCF (HCF) of 49 and 55

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What is the Greatest Common Divisor of 49 and 55?

Answer

GCF (HCF) of 49 and 55 is
1

Common factors: 1

Only 1 divides both: 49 and 55 share no prime factor.

Such numbers are called coprime (relatively prime); their LCM is just the product: 49 × 55 = 2,695.

49 = 72

55 = 5 × 11

Prime4955Lowest power
5—5—
772——
11—11—

— = 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
49401
49411
49427
49431
49441
49451
49461
49471
49481
494949
49501
49511
49521
49531
49541
49551
49567
49571
49581
49591
49601
49611
49621
49637
49641
49651
49661
49671
49681
49691

FAQ

What is the Greatest Common Divisor of 49 and 55?

GCF (HCF) of 49 and 55 is 1

How to find the GCF of 49 and 55?

You can find the GCF of 49 and 55 by listing all factors of both numbers and picking the greatest common one, or by prime factorization. The GCF of 49 and 55 is 1.

What prime factors do 49 and 55 share?

49 and 55 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 49/55?

Divide the numerator and the denominator by the GCF 1: 49 ÷ 1 = 49 and 55 ÷ 1 = 55. So 49/55 in lowest terms is 49/55.

Are 49 and 55 coprime?

Yes, 49 and 55 are coprime (relatively prime) because their Greatest Common Factor is 1.

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