Monday, December 14, 2015

number theory - Dividing 2012! by 2013n




What's the largest power n such that 2012! is divisible by 2013n?



It doesn't look like its divisible at all since 2012<2013; am I right?


Answer



2013=3×11×61. Thirty-two naturals 2012 are divisible by 61 and none are divisible by 612. At least thirty-two naturals are divisible by 11 and by 3, and so we have that 201332 divides 2012! but no larger power of 2013 does.


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