Hi. I am having an issue with this. I got the first 11 tests to pass and then on 12 it says that I essentially had one extra emirp number. I had 981 and the correct result was 980. When I found the difference in my total and the expected outbut it was 34217, which is a prime number. Can someone help explain this difference?

Thanks!

Tests
n = 50
n = 100
n = 200
n = 500
n = 750
n = 1000
n = 3000
n = 7000
n = 10000
n = 15000
n = 20000
n = 50000
[981, 39989, 19217583] should equal [980, 39989, 19183366]