Does the number 300 has a special meaning in the bible?

Timeline from 1 to 9, the first born first,then son and daughters then all the life they lived, in the book of Genesis chapter 5 where Enoch walked with G-D 300 years and was no more for G-D took him on the seventh. 1)Adam: 130 800 930 25+7+18=50 difference 2)Seth: 105 807 912 15+8+7=30 difference 3)Enos: 90 815 905 20+25+5=50 difference 4)Cainan: 70 840 910 5+10+15=30 difference 5)Mahalaleel: 65 830 895 97+30+67=194 difference 6)Jared: 162 800 962 7)Enoch: 65 300 365 disappeared 8)Methuselha: 187 782 969 5+187+192=384 difference 9)Lamek: 182 595 777 187-162=25. 800-782=18. 969-962=7 25+18+7=50 384+194=578 384-194=190 and 17×17×2-16×16×2=66 Then Noah has 3 sons and their age is not mentioned. And all the days of Noah were nine hundred and fifty years: and he died. 500 +100+ 350 = 950 And Noah's Ark's measurements were 300 cubits by 50 cubits and 30 cubits and the interior was divided into 3. 300+50+30=380 380÷2=190 And the house of the Lord were 50 cubits by 100 cubits and the house of The Ark's resting place were 30 cubits long. And the perimeter of the house of the Lord are 50+100+50+100=300 cubits