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A060591 Integers i > 1 for which there is no prime p such that i is a solution mod p of x^3 = 2. 3

%I #11 Apr 26 2024 12:36:41

%S 113,128,194,283,333,338,376,403,430,450,491,503,548,578,722,866,875,

%T 906,1008,1102,1243,1244,1256,1260,1365,1368,1371,1392,1453,1478,1529,

%U 1537,1675,1718,1802,1805,1911,1926,1971,2051,2084,2108,2132,2153,2163

%N Integers i > 1 for which there is no prime p such that i is a solution mod p of x^3 = 2.

%C Solutions mod p are represented by integers from 0 to p-1. The following equivalences holds for i > 1: There is a prime p such that i is a solution mod p of x^3 = 2 iff i^3-2 has a prime factor > i; i is a solution mod p of x^3 = 2 iff p is a prime factor of i^3-2 and p > i.

%H Robert Israel, <a href="/A060591/b060591.txt">Table of n, a(n) for n = 1..10000</a>

%F Integer i > 1 is a term of this sequence iff i^3-2 has no prime factor > i.

%e a(1) = 113, since there is no prime p such that 113 is a solution mod p of x^3 = 2 and for each integer i from 2 to 112 there is a prime q such that i is a solution mod q of x^3 = 2 (cf. A059940).

%p filter:= proc(i) max(numtheory:-factorset(i^3-2)) <= i end proc:

%p select(filter, [$2..10000]); # _Robert Israel_, Apr 26 2024

%Y Cf. A040028, A059940.

%K nonn

%O 1,1

%A _Klaus Brockhaus_, Apr 06 2001

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Last modified May 20 03:57 EDT 2024. Contains 372703 sequences. (Running on oeis4.)