How 2017 breaks down

Roman numerals are additive from left to right (with subtractive pairs like IV=4 and CM=900). MMXVII decomposes as: M = 1000 + M = 1000 + X = 10 + V = 5 + I = 1 + I = 1 = 2017.

Nearby numbers

Number	Roman numeral
2013	MMXIII
2014	MMXIV
2015	MMXV
2016	MMXVI
2017	MMXVII
2018	MMXVIII
2019	MMXIX
2020	MMXX
2021	MMXXI

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