Challenge archive: zh3r0 CTF V2 2021 - import numpy as MT

Challenge: import numpy as MT
Event: zh3r0 CTF - 2021 (V2)
Year: 2021
Category: Cryptography
Authors: deuterium
Mode: offline
Article: https://deut-erium.github.io/challenges/zh3r0-2021/import-numpy-as-mt/
Text: https://deut-erium.github.io/challenges/zh3r0-2021/import-numpy-as-mt/challenge.txt
JSON: https://deut-erium.github.io/challenges/zh3r0-2021/import-numpy-as-mt/challenge.json

Original description:
Python is so slow! Lets use nUmPy tO MAkE iT FaSTer. Only if there was a module for crypto in it :(

Notes:
- This is the original two-layer encryption challenge. The Wiki Mersenne practice variant uses one layer and has a different flag.
- This fixed output was generated for the post with the unchanged original program and event flag. It is not a recording from the competition.
- This is a static archive. No live challenge service or runtime simulation is provided here.

Challenge files (primary):
- challenge.py (challenge.py; handout)
  URL: https://deut-erium.github.io/assets/challenges/zh3r0-2021-import-numpy-as-mt/challenge.py
  Bytes: 476
  SHA-256: 621619c4273bfd5e3e12b3293418de68489ab17a64b5ca879ddc4a0ad3d0acac
  Upstream provenance: https://raw.githubusercontent.com/zh3r0/zh3r0-ctf/7fd08591b088215d58aefdc3b0f64c4a9de80f5d/V2/crypto/import_numpy_as_MT/public/challenge.py
- Fixed instance (output.txt) (output.txt; fixed-instance)
  URL: https://deut-erium.github.io/assets/challenges/zh3r0-2021-import-numpy-as-mt/output.txt
  Bytes: 257
  SHA-256: 465c3b9fd394dea2de40a1df5581798b3182e8b8f3dd966dd76df80b9330cc25

Licenses (local copies):
No local license record is available for this entry.

SPOILERS - organizer files and solutions
Spoilers: organizer files and upstream source, archive, or solution links may reveal answers. Modified downloads are identified below.
Source: https://github.com/zh3r0/zh3r0-ctf/blob/7fd08591b088215d58aefdc3b0f64c4a9de80f5d/V2/crypto/import_numpy_as_MT/readme.md#L5
Archive: https://github.com/zh3r0/zh3r0-ctf/tree/7fd08591b088215d58aefdc3b0f64c4a9de80f5d/V2/crypto/import_numpy_as_MT
Solution: https://github.com/zh3r0/zh3r0-ctf/blob/7fd08591b088215d58aefdc3b0f64c4a9de80f5d/V2/crypto/import_numpy_as_MT/admin/solve.py