FIND THE NUMBER OF PRIMITIVE ROOTS OF 147, 686, AND 1331
Added by Stacy H.
Step 1
For 147, we have: 147 = 3 × 7² So, φ(147) = (3-1)(7²-7) = 2 × 42 = 84 For 686, we have: 686 = 2 × 11 × 31 So, φ(686) = (2-1)(11-1)(31-1) = 1 × 10 × 30 = 300 For 1331, we have: 1331 = 11³ So, φ(1331) = 11³ - 11² = 1331 - 121 = 1210 Now, we need to find the Show more…
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