In JavaScript, when a number starts with a leading zero (0), it is interpreted as an octal (base-8) number.
In octal representation, the digits range from 0 to 7. Therefore, any digit in an octal number that is greater than or equal to 8 would be invalid. In this case, the digit 8 in the number 03305273127 makes it an invalid octal number.
JavaScript automatically converts invalid octal numbers to decimal (base-10) numbers. So, 03305273127 is treated as a decimal number and is evaluated to 454391383.