Prime factorization of 891

891

297 3

33 9

11 3 3 3

So exg

prime factorization is finding the prime number that will multiply to getthat tnumber

normally we exclude the number 1

so prime factor of 6=2 times 3

note:2*3 menas 2 times 3

so 891

it is odd so not divisible by 2

try 3

891/3=297

3*297=891

factor further

297

try 3

297/3=99

3*3*99=891

99

divide by 3

33

3*3*3*33

33

divide by 3

11

3*3*3*3*11

11 is prime so the prime factoization is

3*3*3*3*11 or 3^4*11