Because they are both prime numbers which means that they have only 2 factors
Two prime numbers, 61 and 67, are the only prime numbers between 60 and 70.
61 and 67 are the only prime numbers between 60 and 70.
61 and 67 are the two prime numbers between 60 and 70.
61, 67.
61
The prime numbers between 60 and 80 are 61, 67, 71, and 73.
There are 5 prime numbers from 60 to 80:61, 67, 71, 73 and 79
61, 67,71, 73, and 79 are the prime numbers between 60 and 80.
Two of them and they are 61 and 67
There is only one and it is 61 and so 61+0 = 61
61 67
The prime numbers between 60 and 70 are 61 and 67.