Prime related problem. Need help,please.

Revision en2, by Muhammad_mhs, 2019-08-01 22:16:42

Can anyone help me for this problem?link is here. I get it from there

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en2 English Muhammad_mhs 2019-08-01 22:16:42 142
en1 English Muhammad_mhs 2019-08-01 22:12:49 122 Initial revision (published)