EXHIBITION OF A SERIES OF PRIMES, &C. < 



number dire&ly under it is a prime, as is the cafe in Tab* 1ft,' 

 with 37, 41, 43, 47. 



But if a feries of primes only is to be calculated, the work Primes* 

 may be (hortened, by omitting the values of /+ p + 2n in all 

 the columns except the higheft, and marking thole numbers 

 with afterifks which correfpond id the values of c only found 

 in the uppermoft line, as in Tab. 2d. where the prime num- 

 bers from 1 to 16 are calculated. 



Note, the values of c may be otherwife calculated : — -from 

 the product fp take the greateft multiple off — p that can be 

 fubtracled from it ; this will give the leaft value of c corre- 

 fponding to that value off — p. 



Your's, &c. 



J. GOUGH. 



TABLE I. 



Kendal , Dec. 7, 1801, 



B2 



TABLE 



