70 is the smallest weird number.
In number theory, a weird number is a natural number that is abundant but not semiperfect. In other words, the sum of the proper divisors (divisors including 1 but not itself) of the number is greater than the number, but no subset of those divisors sums to the number itself. Got it?
The smallest weird number is 70. Its proper divisors are 1, 2, 5, 7, 10, 14, and 35; these sum to 74, but no subset of these sums to 70.
TESO #69 has taken about four weeks to be completed. This thread, with the emblematic number "69", was opened by OWL with reminiscences from the days when TESO was still spelled out "To eat someone out".
During the past four weeks, we discussed the Fußballweltmeisterschaft, learnt that 4Y passed the Ausbildereignungsprüfung, while easy suffered from Umzugsstress.
Carly survived a Beinahe-Unfall im "Höllental" but still felt able to share a great joke
Waringham showed us some very nice pictures of Warison (including Dackeline):related discussion: Teso #69 ... remains 69 when turn it upside down - #215
Apart from the usual pets, Kimmy-cat and Hagalaz, we discussed an impressive number of other animals: Waschbär, Zauneidechse, Feuersalamander, Fledermaus, Leopardenschildkröte, penguins and polar bears, and, only yesterday, elephants and monitor lizards.
The overriding theme, however, was heat.
Hopefully, conditions will normalize soon, so that the the equation above can reveal its validity:
70.0 °F = 21.1 °C
(It is always good to get your units right.)
We come from here: related discussion: Teso #69 ... remains 69 when turn it upside down
It will be a long way until the next '69' (=169), even longer than the distance already covered. So, keep it up, TESO!