308 



EEPOET 1881. 



The following list gives the two longest successions of composite 

 numbers met with in each of the nine millions : — 



First million 



Second „ 



Third „ 



Fourth „ 

 Fifth 

 Sixth 



Seventh „ 



Eighth „ 



Ninth ,, 



{ 



Lower Limit 

 370,261 

 492,113 

 f 1,357,201 

 \l,561,919 

 r2,010,733 

 \ 2,898,239 

 /3,826,019 

 \ 3,933,599 

 r4,652,353 

 \4,738,651 

 /5,518,687 

 15,888,741 

 6,034,247 

 6,571,401 

 /7,230,331 

 1.7,621,259 

 / 8,421,251 

 1.8,917,523 



{ 



The portions of the preceding tables which relate to the first five 

 millions were given also in last year's Report (pp. 34-36). 



It may be remarked that the first table in Section I. shows that there 

 are twenty-four centuries in the nine millions which contain no prime, 

 and that the distribution of these centuries among the millions is : — 



The fii'st number of each of these centuries, which consist therefore 

 wholly of composite numbers, is given in the following list : — 



1,671,800 

 2,637,800 

 3,117,300 

 3,933,600 

 4,640,600 

 4,6.52,400 

 5,178,200 

 5,518,700 



5,837,400 

 5,845,200 

 6,012,900 

 6,085,000 

 6,333,800 

 6,376,200 

 6,789,800 

 6,958,700 



7,129,900 

 7,565,200 

 7,803,500 

 7,826,900 

 8,027,700 

 8,367,400 

 8,421,300 

 8,905,200 



