It is: 1/17 in its simplest form
23
The two numbers you multiply together to equal 391 are 17 by 23.
17 multiplied by 23 is 391.
142
23
1.5985
.............. ....391.... ....../\...... ...../..\..... ..../....\.... ..17..23.. ..............
195.5
The factors of 391 are: 1 17 23 391 The prime factors are: 17 x 23
17 x 23 = 391
391
no 5/23 = 0.21739130434782608695652173913043