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A086711 Primes p such that A001414(p-1) = A001414(p+1), where A001414 = sum of primes dividing n (with repetition). 5
11, 17, 31, 251, 1429, 3041, 16561, 16927, 53299, 56897, 89783, 95089, 213599, 282977, 345547, 432587, 592223, 763457, 906949, 915799, 1050449, 1058389, 1485017, 1577341, 1678399, 1780253, 1855549, 2131687, 2374289, 2658259 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Conjecture: sequence is infinite.

LINKS

Charles R Greathouse IV, Table of n, a(n) for n = 1..1280

EXAMPLE

a(3)=31 because it is prime and 30=2*3*5, 32=2^5 and 2+3+5 = 2+2+2+2+2 = 10.

CROSSREFS

Cf. A001414, A190680.

Sequence in context: A189324 A127703 A165667 * A039514 A098797 A271999

Adjacent sequences:  A086708 A086709 A086710 * A086712 A086713 A086714

KEYWORD

nonn

AUTHOR

Jason Earls (zevi_35711(AT)yahoo.com), Jul 28 2003

STATUS

approved

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Last modified August 19 07:12 EDT 2017. Contains 290794 sequences.