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Prime factorization is a very difficult problem, and top mathematicians and computers have not solved it. But for small numbers, it is possible to use trial and error to find the prime factorization of the number. The first thing to note is that if a number is the product of two prime numbers, neither prime is larger than the square root of the number. So, for 165, √165 ~ 13. So, now comes the trial and error. Is it divisible by 2? No, it's not an even number. Is it divisible by 3? Let's see, do the individual numbers add up to a multiple of 3? 1+6+5=12 and 1+2=3. So, 3 is one factor. Now that we know the first factor, it's just a simple division problem to find the other factor. 165/3 = 55.
But wait a minute; 55 isn't prime. It's 5*11. So the prime factors of 165 are 3, 5 and 11. This means that there are no "2" prime numbers that multiply to 165. There are 3 prime numbers that multiply to 165.
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What 2 prime numbers times together makes 469?
7 and 67.
What three prime numbers are multiplied to make 147?
3 x 7 x 7 = 147
Can all whole numbers be written as prime numbers times together?
Yes, this is called their prime factorization.
What 3 prime numbers times together makes 165?
They are: 3 5 and 11
Which prime numbers times thougether makes 209?
11 x 19
Which 2 prime numbers times together make 123?
3 and 41
What 2 prime numbers times together to make 371?
7x53=371
What 4 prime numbers can times together to make 42?
1, 2,3,7
What are two prime numbers times together to make 209?
19 and 11
What two prime numbers multiplied together give you the answer of 34?
17 times 2 !
What two prime numbers can you times together to equal 91?
7 x 13
What two prime numbers times together make 42?
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