Yes, 1 and 5, because 5 is a Prime number. A prime number is a number that only has two factors, one and itself. 2 is the only even prime number. 1 is not a prime number or a composite number.
The only number that ONLY has two and five as factors is 10, which has two digits, so there are no numbers that are three digits long and ONLY have two and five for factors. However, if you are asking what the largest three digit number that has two and five for factors, it would be the largest three digit number with ten as a factor, as ten the the LCM of two and five, and that would be 390.
7 is a prime number. The only factors of a prime number are 1 and itself, so 7 only has two factors.
5 has only two factors, 1 and itself. Put five blocks in one row.
Because it only has two factors 1 and itself. So it is a prime number
81 only has five factors.
There are only four factors ! They are 1,2,13 & 26
Five has two factors: one and itself.
37 has two factors: 1 and 37.
Prime numbers have only two factors, 1 and themselves, so only prime numbers could have only two factors
A number that has only 2 factors is a prime number whose factors are itself and one and the 1st five prime numbers are: 2 3 5 7 and 11
A number that has only two factors is called a prime. The only factors of a prime are 1 and the number itself.