GCF (HCF) of 1 and 13

"Greatest Common Factor" Calculator
Greatest Common Factor of
and

What is the Greatest Common Divisor of 1 and 13?

Answer

GCF (HCF) of 1 and 13 is
1

Common factors: 1

1 divides every number: the GCF with 1 is always 1, and the LCM is the other number itself — here 13.

1 — no prime factors

13 — prime

Prime113Lowest power
13—13—

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

GCF = 1

More with these numbers

Related Calculations

See Also

GCF Table

Number 1Number 2GCF
111
141
151
161
171
181
191
1101
1121
1131
1161
1201
1271
1561
11001

FAQ

What is the Greatest Common Divisor of 1 and 13?

GCF (HCF) of 1 and 13 is 1

How to find the GCF of 1 and 13?

You can find the GCF of 1 and 13 by listing all factors of both numbers and picking the greatest common one, or by prime factorization. The GCF of 1 and 13 is 1.

What prime factors do 1 and 13 share?

1 and 13 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 1/13?

Divide the numerator and the denominator by the GCF 1: 1 ÷ 1 = 1 and 13 ÷ 1 = 13. So 1/13 in lowest terms is 1/13.

Are 1 and 13 coprime?

Yes, 1 and 13 are coprime (relatively prime) because their Greatest Common Factor is 1.

See Also