Answer: Her e-mail password is [tex]1048222131[/tex]
Step-by-step explanation:
You know that a part of Rivka's e-mail password is formed by the last four digits of her telephone number.
The exercise gives you the last four digits of Rivka's telephone number:
[tex]1048[/tex]
Now, in order to find the other numbers, you need to descompose [tex]1048[/tex] into its prime factors. Then:
[tex]1048=2*2*2*131[/tex]
Therefore, based on this, you can determine that her e-mail password is:
[tex]e-mail\ password=1048222131[/tex]