Abstract
By the carries involved in (p±1)p≡p 2±1 mod p 3, and by the lattice structure of Z(.)mod q for q=p±1 (odd prime p), all idempotents taken as naturals e<p are shown to have distinct e p−1 mod p 3, and divisors r of p−1 (resp. p+1) with different primesets have distinct r p−1 mod p 3. Moreover 2p≢2 mod p 3 for prime p, related to Wieferich primes (Wieferich in J. Reine Angew. Math. 136:293–302, 1909) and FLT case1 for integers (Chap. 8). Conjecture: Some g|p±1 is semi primitive root of 1 mod p k>2, with units group {−1, g}*.
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Benschop, N.F. (2009). Fermat’s Small Theorem Extended to r p−1mod p 3 . In: Associative Digital Network Theory. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-9829-1_7
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DOI: https://doi.org/10.1007/978-1-4020-9829-1_7
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