9007199254740993 == 2**53+1
Challenge: what's the smallest positive integer for which this doesn't workhttps://twitter.com/jdan/status/1232738079921856512 …
TIL in #javacript you can specify more than one digit for a number i.e.
let x = 12345;
instead of
let x = [1, 2, 3, 4, 5].reduce((a,b)=>a*(9+1)+b);
This is going to clean up my code so much! 
RT!
RT!
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So, I would argue that the two expressions 9007199254740993 [9, 0, 0, 7, 1, 9, 9, 2, 5, 4, 7, 4, 0, 9, 9, 3].reduce((a, b) => a * (9 + 1) + b) in fact evaluate to identical values
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my record: [9,0,1,0,0,0,0,0,0,0,0,0,0,0,1,9] maps to 9010000000000020
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