 | James Robinson (of Boston.) - 1847 - 304 pages
...&c., are composite numbers, each of which can be measured by two or more numbers greater than a unit. A prime factor of a number is a prime number that will measure it ; and all the prime factors of a number are all the prime numbers that will measure it;... | |
 | Rufus Putnam - Arithmetic - 1849 - 402 pages
...factor. Thus, 8 and 15, though composite numbers, are prime to each other, for 8 = 2X2X2, and 15=3X5. A Prime Factor of a number is a prime number that will divide it without a remainder. Thus, 2, 3, and 5, are prime factors of 30. 1. Is 20 an integer? Why?... | |
 | Charles Guilford Burnham - 1850 - 350 pages
...unit is the only number that will measure both of them. Thus, 3 and 5 are prime to each other. 13. A Prime Factor of a number is a prime number that will measure it ; and all the prime factors of a number are all QUESTIONS.— 19. What is a proper fraction?... | |
 | Benjamin Greenleaf - Arithmetic - 1857 - 452 pages
...being taken an entire number of times, produce it ; as, 3 is a factor of 9, and 4 a factor of 16. 165. A prime factor of a number is a prime number that will exactly divide it; thus the prime factors of 10 are the prime numbers 1, 2, and 5. NOTE. — Unity or 1 is not generally... | |
 | Benjamin Greenleaf - Arithmetic - 1857 - 336 pages
...prime numbers not larger than 1109 are included in the following TABLE OF PRIME NUMBERS. ABT. 113. A. prime factor of a number is a prime number that will exactly divide it ; thus, the prime factors of 21 are the prime numbers 1, 3, and 7. A composite factor of a number is... | |
 | Joseph Ray - Arithmetic - 1857 - 348 pages
...exactly divide it, (Art. 37). Hence, every factor of a number, is a divisor of that number. DEF. 12. A prime factor of a number is a prime number that will exactly divide it : thus, 3 is a prime factor of 12 ; while 4 is a factor of 12, but not a prime factor. Therefore, all... | |
 | Charles Guilford Burnham - 1857 - 342 pages
...unit is the only number that will measure both of them. Thus, 3 and 5 are prime to each other. 13. A Prime Factor of a number is a prime number that will measure it ; and all the prime factors of a number are all QUESTIONS.— 19. What is a proper fraction?... | |
 | Charles Guilford Burnham - Arithmetic - 1857 - 328 pages
...unit is the only number that will measure both of them. Thus, 3 and 5 are prime to each other. 13. A Prime Factor of a number is a prime number that will measure it ; and all the prime factors of a number are all QUESTIONS. — 19. What is a proper fraction?... | |
 | Benjamin Greenleaf - Arithmetic - 1858 - 472 pages
...being taken an entire number of times, produce it ; as, 3 is a factor of 9, and 4 a factor of 1 6. 165. A prime factor of a number is a prime number that •will exactly divide it; thus the prime factors of 10 are the prime numbers 1, 2, and 5. NOTE. — Unity or 1 is not generally... | |
 | Benjamin Greenleaf - Arithmetic - 1858 - 458 pages
...being taken an entire number of times, produce it ; as, 3 is a factor of 9, and 4 a factor of 16. 165. A prime factor of a number is a prime number that will exactly divide it ; thus the prime factors of 10 are the prime numbers 1, 2, and 5. NOTE. — Unity or 1 is not generally... | |
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A Prime Factor of a number is a prime number that will exactly Divide it; thus, the prime factors of 21 are the prime numbers 1, 3, and 7. 
