Well, I have a manual method that will tell you how to find the largest prime factor.
For example, we have two numbers 1996 and 99999 and we want to find their prime factors. First of all we have to construct a tree of these numbers as below:
1996
998,2
449,2,2
1996 = 2*2*499
99999
33333,3
11111,3,3
271,41,3,3
99999 = 3*3*41*271
If you note in the above examples the largest prime factors are 499 and 271. Similarly, for any number you can find the prime factor by using the above method.
Use a factor tree. 56 28,2 14,2 7,2,2,2 The largest prime factor is 7.
The answer is 7
The largest prime factor of 92 is 23.
The largest prime factor of 1,505 is 43.
The largest prime factor of 93,093 is 31.
Use a factor tree. 56 28,2 14,2 7,2,2,2 The largest prime factor is 7.
Suppose you have a number N and you want to find its largest prime factor. It is probably easiest to start at the bottom.Find the smallest prime factor, p.Find its factor pair = N/p.If the second number (= N/p) is a prime, then it is the largest prime factor.if not, replace N by N/p and go back to the top.
Find them all. Pick the largest one. 2 x 2 x 5 x 5 = 100 The largest prime factor of 100 is 5.
The answer is 7
The largest prime factor of 92 is 23.
The largest prime factor of 1,505 is 43.
The largest prime factor of 93,093 is 31.
The largest prime factor of 38 is 19.
The largest prime factor of 42 is 7
The largest prime factor of 4,110 is 137.
The largest prime factor of 8,091 is: 31
The largest prime factor of 1,996 is 499.