Today I learned that the number 420 is the sum of 4 consecutive prime numbers 101 + 103 + 107 + 109 AND the subsequent number 421 is the sum of the five previous consecutive prime numbers 73 + 79 + 83 + 89 + 97.

Read more: https://en.wikipedia.org/wiki/400_(number)#421

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  1. I often happen to glance at the clock within a minute or two of the time 4:20pm so I looked it up. Also it’s ten times 42 for those Douglas Adams fans!

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