The modulus of $ z $ is:
$$ |z| = 1015$$To find modulus of a complex number $ z = a + bi $ we use formula:
$$ |z| = \sqrt{a^2 + b^2} $$In this example we have $ a = -119 $ and $ b = -1008 $ so:
$$ \begin{aligned}|z| &= \sqrt{ (-119)^2 + (-1008)^2 } \\[1 em]|z| &= \sqrt{ 14161 + 1016064 } \\[1 em]|z| &= \sqrt{ 1030225 } \\[1 em]|z| &= 1015 \\[1 em] \end{aligned} $$