Prime factor form of 24

In prime factorization of 1309 write the highest prime factor.

How many prime factors are there in the prime factorisation of 120 ?

The number of prime factors of 145 is:

The product of prime factors of 120 is

a and b are two positive integers such that the least prime factor of b is 3 and the least prime factor of b is 5. Then, the least prime factor of (a + b) is:

Express the following decimals in the form of p/ q , and write the prime factors of q. What do you observe? 4.123

Express the following decimals in the form of p/ q , and write the prime factors of q. What do you observe? 0.1201201

Let A be the set of prime number smaller than 6 and B be the set of prime factors of 30. Check if A and B are equal.

Express the following decimals in the form of p/ q , and write the prime factors of q. What do you observe? 0.bar(63)