A289270 Primes p such that 10*p is the sum of two consecutive primes.
3, 41, 103, 293, 359, 379, 421, 653, 701, 733, 821, 883, 907, 911, 937, 1009, 1237, 1423, 1567, 1627, 1637, 1931, 1973, 2017, 2129, 2203, 2281, 2417, 2459, 2477, 2647, 2879, 3209, 3271, 3347, 3413, 3539, 3593, 3659
Offset: 1
Keywords
Examples
10*3 = 30 = prime(6) + prime(7) = 13+17; 10*41 = 410 = prime(46) + prime(47) = 199+211.
Links
- Charles R Greathouse IV, Table of n, a(n) for n = 1..10000
Crossrefs
Programs
-
Mathematica
Select[Map[Total, Partition[Prime@ Range@ 2200, 2, 1]]/10, PrimeQ] (* Michael De Vlieger, Jun 30 2017 *)
-
PARI
is(n)=isprime(n) && precprime(5*n)+nextprime(5*n)==10*n \\ Charles R Greathouse IV, Jul 02 2017