MathDB

. Anthony denotes in sequence all positive integers which are divisible by

2

. Bertha denotes in sequence all positive integers which are divisible by

3

. Claire denotes in sequence all positive integers which are divisible by

4

. Orderly Dora denotes all numbers written by the other three. Thereby she puts them in order by size and does not repeat a number. What is the

2017th

number in her list? ¨Proposed by Richard Henner

Problem Statement