GCF (HCF) of 121 and 143

"Greatest Common Factor" Calculator
Greatest Common Factor of
and

What is the Greatest Common Divisor of 121 and 143?

Answer

GCF (HCF) of 121 and 143 is
11

Common factors: 1, 11

11 divides both: 121 ÷ 11 = 11, 143 ÷ 11 = 13 — and 11 and 13 share no factor but 1, so no larger number divides both.

121 = 112

143 = 11 × 13

Prime121143Lowest power
111121111
13—13—

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

GCF = 11

More with these numbers

Related Calculations

See Also

GCF Table

Number 1Number 2GCF
1211281
1211291
1211301
1211311
12113211
1211331
1211341
1211351
1211361
1211371
1211381
1211391
1211401
1211411
1211421
12114311
1211441
1211451
1211461
1211471
1211481
1211491
1211501
1211511
1211521
1211531
12115411
1211551
1211561
1211571

FAQ

What is the Greatest Common Divisor of 121 and 143?

GCF (HCF) of 121 and 143 is 11

How to find the GCF of 121 and 143?

You can find the GCF of 121 and 143 by listing all factors of both numbers and picking the greatest common one, or by prime factorization. The GCF of 121 and 143 is 11.

What prime factors do 121 and 143 share?

The prime factorizations of 121 and 143 have 11 in common, and multiplying those shared primes gives 11 — exactly the greatest common factor.

How does the GCF reduce the fraction 121/143?

Divide the numerator and the denominator by the GCF 11: 121 ÷ 11 = 11 and 143 ÷ 11 = 13. So 121/143 in lowest terms is 11/13.

See Also