Question 5
Find the sum of the prime factors of $3^8+3^7+1$.
Original printed choices: A: 13; B: 637; C: 690; D: 689.
Editorial format: answer directly; the printed choices are retained for source fidelity. See the solution for the source issue.
Original printed choices: A: 13; B: 637; C: 690; D: 689.
Editorial format: answer directly; the printed choices are retained for source fidelity. See the solution for the source issue.