A267362 Numbers n such that 5 consecutive numbers starting with n are products of 5 primes.

632148, 1380246, 3322374, 3755672, 4294374, 4336548, 4546071, 5491574, 5924148, 6033752, 6884268, 6943472, 8179566, 8223368, 8252628, 8284548, 8544470, 8646504, 8923472, 8928774, 8961325, 9084392

Offset: 1

Author

Zak Seidov, Jan 20 2016

Keywords

• nonn

Comments

Both n-1 and n+5 may or not be products of 5 primes.

a(1)=632148=A067820(5).

First number n such that also n+5 is product of 5 primes is a(50)=14845324=A067820(6).

Examples

			632148=2*2*3*11*4789, 632149=7*7*7*19*97, 632150=2*5*5*47*269,
632151=3*3*3*13*1801, 632152=2*2*2*31*2549.
		

Links

• Zak Seidov, Table of n, a(n) for n = 1..70

Crossrefs

Subsequence of A124729. Cf. A067820, A267361.

Programs

Mathematica

SequencePosition[PrimeOmega[Range[91*10^5]],{5,5,5,5,5}][[All,1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Mar 05 2017 *)