[[40]] is not prime (composite): [[2]] * [[2]] * [[2]] * [[5]]
Factor pairs: [[2]] * [[20]], [[4]] * [[10]], [[5]] * [[8]]
Prime neighborhood: [[29]], [[31]], [[37]], [[40]], [[41]], [[43]], [[47]]
Prime gap: 4 (interval [[37]] to [[41]])
Primes up to 40: [[2]], [[3]], [[5]], [[7]], [[11]], [[13]], [[17]], [[19]], [[23]], [[29]], [[31]], [[37]] (12 total).
[[40]] is not a centered hexagonal number.
The closest centered hexagonal numbers are [[37]] (index # [[4]]) and [[61]] (index # [[5]]).
First 20 centered hexagonal numbers: [[1]], [[7]], [[19]], [[37]], [[61]], [[91]], [[127]], [[169]], [[217]], [[271]], [[331]], [[397]], [[469]], [[547]], [[631]], [[721]], [[817]], [[919]], [[1027]], [[1141]].
[[square]]: 1600
[[square root]]: 6.3246
[[cube]]: 64000
[[cube root]]: 3.4200
[[natural log]] (ln): 3.6889
[[base-10 log]] (log10): 1.6021
[[base-2 log]] (log2): 5.3219
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https://adactio.com/journal/17997
Orwell said:
Never use a metaphor, simile, or other figure of speech which you are used to seeing in print.
Never use a long word where a short one will do.
If it is possible to cut a word out, always cut it out.
Never use the passive where you can use the active.
Never use a foreign phrase, a scientific word, or a jargon word if you can think of an everyday English equivalent.
Break any of these rules sooner than say anything outright barbarous.
[[Global temperature]] is likely to rise by more than [[1.5C]] above pre-industrial levels by [[2040]]
So sayeth the [[IPCC Sixth Assessment Report]].
concluding that it is βmore likely than notβ that the global temperature increase will hit 1.5C by 2040. Current temperatures globally are, on average, 1.1C above pre-industrial temperatures.
IPCC: Half of global population ‘highly vulnerable’ to climate crisis impactsβ¦
Global temperatures were likely to top 1.5C above pre-industrial levels in the next two decades
β Worst polluting countries must make drastic carbon cuts, says Cop26 chief | Cβ¦
Within the next two decades, temperatures are likely to rise by more than 1.5C above pre-industrial levels, breaching the ambition of the 2015 Paris climate agreement, and bringing widespread devastation and extreme weather.
β Major climate changes inevitable and irreversible β IPCCβs starkest warning yβ¦
