31
31
31 is prime.
there are 3 prime numbers in between 21 and 33... they are 23,29, 31.
32+33+34+35+36 (31 is a prime number) = 170
31
31
From that list, only 31 is a prime number.
31 is prime.
31 is prime. 32 and 33 are composite.
1 is the GCF of 33 and 31 because 31 is a prime number.
These are the composites between 31 and 41: 32, 33, 34, 35, 36, 38, 39, 40.
The prime factors of 33 are 3 and 11 and the prime numbers of 2 and 31 add up to 33
32+33+34+35+36 (31 is a prime number) = 170
32
The prime number is 31. 33/3 = 11 35/5 = 7 39/3=13 31 can only divided by 1 and itself.
It is b: 31