304 



KEPORT — 1881. 



The next table shows the number of primes in each successive group 

 of 10,000 between 5,000,000 and G,000,000. Thus, for example, between 

 5,000,000 and 5,010,000 there are 639 primes, between 5,010,000 and 

 5,020,000 there are also 639 primes, between 5,020,000 and 5,030,000 

 there are 658 primes, and so on. 



The corresponding tables for the fourth and fifth millions were given 

 on pp. 48 and 33 of the Reports for 1879 and 1880 respectively. 



The following is a list of successions of composite numbers of ninety- 

 nine and upwards occurring in the sixth million. 



Sequences of 99 and upwards. 



This table shows that the 103 numbers between 5,137,547 and 

 5,137,651 are composite, and so on ; the numbers in the first two columns 

 being the primes which bound the sequences of composite numbers. 



