Why is the Human Genome Project called a mega project?

(N/A) The Human Genome Project $(HGP)$ was considered a mega project due to the following reasons:
$1$. It had an ambitious goal to determine the complete nucleotide sequence of the entire human genome,which consists of approximately $3 \times 10^9$ base pairs.
$2$. It was a massive,large-scale project that required the development of new technologies and computational tools for data analysis.
$3$. It generated a vast amount of information,requiring the establishment of bioinformatics as a new field.
$4$. The project was time-consuming,taking approximately $13$ years to complete (launched in $1990$ and completed in $2003$).
$5$. It opened up new avenues in genetics,biotechnology,and medical sciences,providing deep insights into human biology and disease mechanisms.