9514 1404 393
Answer:
7317192329
Explanation:
The first 10 primes are ...
2, 3, 5, 7, 11, 13, 17, 19, 23, 29
The number of interest will keep getting larger as long as the first (or next needed) digit keeps getting larger. That is, we want to delete any digit that is not greater than the one previous. Following this rule until we have deleted 6 digits, we find the largest number to be ...
7317192329
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The digits deleted are those in bold in the list of primes.