I am working right now through a book: Number Theory: A Lively Introduction with Proofs, Applications, and Stories
And I cant connect 5 to $3^{3n+1}+2^{n+1}$
2026-04-10 06:30:11.1775802611
Prove that $5 \mid 3^{3n+1}+2^{n+1}$
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