Click 1, which is neither prime nor composite.

Click 2, which is the first prime number.

Click the next multiple of 2.

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Click the next multiple of 2.

Click the next multiple of 2.

Click 3, which is the next prime number.

Click the next multiple of 3 that hasn't already been clicked.

Click the next multiple of 3 that hasn't already been clicked.

Click the next multiple of 3 that hasn't already been clicked.

Click the next multiple of 3 that hasn't already been clicked.

Click the next multiple of 3 that hasn't already been clicked.

Click the next multiple of 3 that hasn't already been clicked.

Click the next multiple of 3 that hasn't already been clicked.

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Click the next multiple of 3 that hasn't already been clicked.

Click the next multiple of 3 that hasn't already been clicked.

Click the next multiple of 3 that hasn't already been clicked.

Click the next multiple of 3 that hasn't already been clicked.

Click the next multiple of 3 that hasn't already been clicked.

Click the next multiple of 3 that hasn't already been clicked.

Click the next multiple of 3 that hasn't already been clicked.

Click the next multiple of 3 that hasn't already been clicked.

Click 5, which is the next prime number.

Click the next multiple of 5 that hasn't already been clicked.

Click the next multiple of 5 that hasn't already been clicked.

Click the next multiple of 5 that hasn't already been clicked.

Click the next multiple of 5 that hasn't already been clicked.

Click the next multiple of 5 that hasn't already been clicked.

Click the next multiple of 5 that hasn't already been clicked.

Click 7, which is the next prime number.

Click the next multiple of 7 that hasn't already been clicked.

Click the next multiple of 7 that hasn't already been clicked.

Click the next multiple of 7 that hasn't already been clicked.

All the remaining numbers are prime.

Click them in order, beginning with 11.

Click the next prime number.

Click the next prime number.

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Click the next prime number.

Click the next prime number.

And the last prime number less than 100 is....

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