Two or more numbers are normally needed to find the GCF
The GCF is 31.
The GCF is 31.
The GCF is 31.
The GCF is 13.
The GCF is 31.
The GCF is 13.
Special case. 13 and 31 have no common factors other than 1. In such cases, the GCF is 1 and the LCM is their product (403).
403.
403 is divisible by 1, 13, 31 and 403.
The positive integer factors of 403 are: 1, 13, 31, 403
403 is composite. It can be evenly divided by 13: 403/13 = 31.
403 is divisible by no number