None, they're both prime numbers.
The only whole number that goes into "7" evenly is 7.The number "7" also goes into the number "70" evenly (10x7=70).
7
21
1 and 7
1 and 7.
1, 7, 19, 133.
The only whole number that goes into "7" evenly is 7.The number "7" also goes into the number "70" evenly (10x7=70).
Each of these numbers goes evenly into 133: 1, 7, 19, 133.
1, 7, 19, 133.
7 and 31 go into 217 evenly.
1
21
7
1 and 7.
1 and 7
7 and 269
The HCF of both numbers is 7