List of co prime numbers in between 1 to 31?

Answer 1

2 numbers are relatively prime, or coprime, if there is no whole number other than 1 that goes into both numbers.

List of coprimes in between 1 and 31

2 and all odd numbers 3-29

3 and 4,5,7,8,10,11,13,14,16,17,19,20,22,23,25,26,28,29

4 and all odd numbers 5-30

5 and 6-9,11-14,16-19,21-24,26-29

6 and 7,11,13,17,19,23,25,29

7 and 8-13,15-20,22-27,29-30

8 and all odd numbers 9-29

9 and 10,11,13,14,16,17,19,20,22,23,25,26,28,29

10 and 11,13,17,19,21,23,27,29

11 and 12-21,23-30

12 and 13,17,19,23,25,29

13 and 14-25,27-30

14 and 15,17,19,23,25,27,29

15 and 16,17,19,22,23,26,28,29

16 and all odd numbers 17-29

17 and 18-30

18 and 19,23,25,29

19 and 20-30

20 and 21,23,27,29

21 and 22,23,25,26,29

22 and 23,25,27,29

23 and 24-30

24 and 25,29

25 and 26-29

26 and 27,29

27 and 28,29

28 and 29

29 and 30