# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a093449 Showing 1-1 of 1 %I A093449 #8 Dec 05 2013 19:56:47 %S A093449 2,6,30,210,2730,39270,510510,23393370,363993630,64790866140, %T A093449 530514844860,126408523110870,3425113062060690,660393717163700520, %U A093449 26657280574571657010,3448055881024876471350,308480161111936386482910 %N A093449 Least number with n distinct prime divisors arising as the product of two or more consecutive integers. %C A093449 2, 6, 30, 210 and 510510 are primorials (A002110). There are no more primorials in the first 300 terms. %C A093449 Upper bounds for a(14)-a(18): 660393717163700520, 28386773771493397260, 3448055881024876471350, 308480161111936386482910, 32521466098360753728404190. %e A093449 a(7) = 510510 = 714*715 has prime divisors 2, 3, 5, 7, 11, 13 and 17. %Y A093449 Cf. A002110, A045619, A093450. %K A093449 hard,nonn %O A093449 1,1 %A A093449 _Amarnath Murthy_, Apr 03 2004 %E A093449 Edited, corrected and extended by _David Wasserman_, Mar 21 2007 %E A093449 a(14)-a(17) from _Donovan Johnson_, Sep 13 2008 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE