First prime gaps without semiprimes

zak seidov zakseidov at yahoo.com
Sun Dec 23 09:09:01 CET 2007


First prime gaps without semiprimes
{2,3,1},
{11,13,2},
{97,101,4},
{601,607,6},
{6473,6481,8}
{2521,2531,10},
{35117,35129,12},
{63113,63127,14},
{39343,39359,16},
{104659,104677,18},
{705053,705073,20},
{512821,512843,22},
{1123279,1123303,24},
{4357781,4357807,26},
{4942711,4942739,28},
{4808987,4809017,30},
{5922317,5922349,32},
{32995057,32995091,34},
{105484481,105484517,36},
{37212113,37212151,38},
{108525829,108525869,40}
E.g., there is no semiprime between two subsequent
primes 108525829 and 108525869 with gap 40. 
Anyone may wish to extend this list?
thanks, Zak


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