log of n_factorial n actual factln(n) 1 0.0000000 0.0000000 2 0.6931472 0.6931472 3 1.7917595 1.7917595 4 3.1780538 3.1780539 5 4.7874917 4.7874918 6 6.5792512 6.5792513 7 8.5251614 8.5251617 8 10.6046029 10.6046028 9 12.8018275 12.8018274 10 15.1044126 15.1044130 11 17.5023078 17.5023079 12 19.9872145 19.9872150 13 22.5521639 22.5521641 14 25.1912212 25.1912212 15 27.8992722 27.8992710 20 42.3356174 42.3356171 25 58.0036060 58.0036049 30 74.6582362 74.6582336