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A247088
Primes sandwiched between 10-almost primes (A046314).
2
3885569, 5717249, 8411201, 9173249, 11039489, 13310081, 13506751, 13633759, 14616449, 15709951, 17482879, 21614849, 21988097, 24507521, 24714559, 26207551, 26720767, 28680319, 30546559, 31780351, 32995999, 33999103, 34602751, 38255489, 38531249, 38618369, 40408831, 44103041, 44278001
OFFSET
1,1
COMMENTS
Primes p such that p-1 and p+1 are 10-almost primes.
EXAMPLE
3885569 - 1 = 2^9 * 7589;
3885569 + 1 = 2 * 3^6 * 5 * 13 * 41.
MATHEMATICA
Select[Prime[Range[2678000]], PrimeOmega[#-1]==PrimeOmega[#+1]==10&] (* Harvey P. Dale, Jul 05 2019 *)
PROG
(PARI) is(n)=bigomega(n-1)==10 && bigomega(n+1)==10 && isprime(n) \\ Charles R Greathouse IV, Apr 27 2015
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Jan 10 2015
STATUS
approved