GCF (HCF) of 121 and 169

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What is the Greatest Common Divisor of 121 and 169?

Answer

GCF (HCF) of 121 and 169 is
1

Common factors: 1

Only 1 divides both: 121 and 169 share no prime factor.

Such numbers are called coprime (relatively prime); their LCM is just the product: 121 × 169 = 20,449.

121 = 112

169 = 132

Prime121169Lowest power
11112——
13—132—

— = 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
12115411
1211551
1211561
1211571
1211581
1211591
1211601
1211611
1211621
1211631
1211641
12116511
1211661
1211671
1211681
1211691
1211701
1211711
1211721
1211731
1211741
1211751
12117611
1211771
1211781
1211791
1211801
1211811
1211821
1211831

FAQ

What is the Greatest Common Divisor of 121 and 169?

GCF (HCF) of 121 and 169 is 1

How to find the GCF of 121 and 169?

You can find the GCF of 121 and 169 by listing all factors of both numbers and picking the greatest common one, or by prime factorization. The GCF of 121 and 169 is 1.

What prime factors do 121 and 169 share?

121 and 169 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 121/169?

Divide the numerator and the denominator by the GCF 1: 121 ÷ 1 = 121 and 169 ÷ 1 = 169. So 121/169 in lowest terms is 121/169.

Are 121 and 169 coprime?

Yes, 121 and 169 are coprime (relatively prime) because their Greatest Common Factor is 1.

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