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%I #20 May 11 2013 19:10:54
%S 440738966073,464881210073,645462662449,914549532721,932537185321,
%T 936083045673,1043710445721,1091100709673,1225660528209,1349165568945,
%U 1602377996921,1682159750473,1714275593649,1730241245545,1756186304521,1872671302049,1956516794721,1987087485225
%N First of a run of 7 consecutive numbers with same prime signature.
%C a(1) = A034173(7) = A218455(443) = A218455(444)-1.
%C a(19) > 2*10^12. - _Donovan Johnson_, May 11 2013
%e The 7 consecutive numbers from 645462662449 to 645462662455 all have a prime signature of 2,1,1,1.
%Y Cf. A034173, A034174, A052213, A052214, A175590, A218448, A218455.
%K nonn
%O 1,1
%A _Donovan Johnson_, Nov 08 2012
%E a(7)-a(18) from _Donovan Johnson_, May 11 2013