One test case not passing

#1

Hey, my code passes all test cases except for one test case, could you please help me figure out why that is happening?
Here is my code: https://onlinegdb.com/eC4bJZOmc

#2

The 500,000th prime is 7,368,787 .

so size of array should be at least 7368788

Reference Code

#3

Okay thanks for correcting it

#4

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