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 A217387 Emirps (A006567) whose difference with the reversal is a perfect cube. 3
 1523, 3251, 7529, 9257, 154747, 165857, 171467, 174767, 312509, 322519, 373669, 747451, 758561, 764171, 767471, 905213, 915223, 966373, 1000033, 1020233, 1077733, 1078733, 1083833, 1099933, 1165643, 1173743, 1175743 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The differences are multiples of 1728. LINKS Antonio Roldán, Table of n, a(n) for n = 1 to 40 EXAMPLE 905213 is prime, 312509 is prime. 905213 - 312509 = 592704 = 84^3. PROG (PARI) isinteger(n)=(n==truncate(n)) reverse(n)=eval(concat(Vecrev(Str(n)))) iscube(n)= { local(f, m, p=0); if(n==1, p=1, f=factor(n); m=gcd(f[, 2]); if(isinteger(m/3), p=1)); return(p) } {for(i=2, 10^7, p=reverse(i); if(isprime(i)&&isprime(p)&&iscube(abs(i-p)), print1(i, " ")))} /* Antonio Roldán, Dec 19 2012 */ CROSSREFS Sequence in context: A087867 A073104 A031537 * A031717 A236880 A226700 Adjacent sequences:  A217384 A217385 A217386 * A217388 A217389 A217390 KEYWORD nonn,base AUTHOR Antonio Roldán, Oct 02 2012 STATUS approved

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Last modified September 21 01:46 EDT 2021. Contains 347596 sequences. (Running on oeis4.)