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+- a [[number]].
+  - [[not a prime]]
+  - it made sense to *test* it because it is a mersenne number (?)
+  - > The exponents n which give Mersenne primes are 2, 3, 5, 7, 13, 17, 19, 31, ... (sequence A000043 in the OEIS) and the resulting Mersenne primes are 3, 7, 31, 127, 8191, 131071, 524287, 2147483647, ... (sequence A000668 in the OEIS).
+  - [[meta]] #agora
+    - #push [[todo]]
+      - implement pull button in the mini cli of the agora. it opens in a new tab by default :)