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A329894 Terms of A025487 from which the distance to the next larger prime is a composite number. 2
512, 16384, 373248, 393216, 524288, 1119744, 4194304, 4718592, 5971968, 8388608, 10077696, 10616832, 17915904, 21233664, 31104000, 33554432, 35831808, 42467328, 47775744, 56623104, 67108864, 150994944, 159252480, 286654464, 322486272, 362797056, 679477248, 859963392, 1528823808, 2176782336, 2890137600, 4294967296, 5804752896, 8748000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

From the first 795641 terms of A025487 (terms that are in range 1 .. 2^101) only 4238 (~ 0.5 %) are included in this sequence.

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..4238

EXAMPLE

As A151800(512) = 521, with 521 - 512 = 9 (a composite number), 512 is included in this sequence.

PROG

(PARI)

isc(n) = ((n > 1)&&!isprime(n));

for(n=1, 2000, if(isc(nextprime(1+A025487(n))-A025487(n)), print1(A025487(n), ", ")));

CROSSREFS

Cf. A025487, A129912, A141345, A151800.

Sequence in context: A254252 A200791 A254812 * A258523 A257147 A254579

Adjacent sequences:  A329891 A329892 A329893 * A329895 A329896 A329897

KEYWORD

nonn

AUTHOR

Antti Karttunen, Dec 24 2019

STATUS

approved

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Last modified April 20 02:45 EDT 2021. Contains 343121 sequences. (Running on oeis4.)