A329894 - OEIS

A329894

Terms of A025487 from which the distance to the next larger prime is a composite number.

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

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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));