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142 is a composite number; it has factors other than 1 and itself. The four factors of 142 are 1, 2, 71, 142. The factor pairs of 142 are 1 x 142 and 2 x 71. The proper …factors of 142 are 1, 2, and 71 or, if the definition you are using excludes 1, they are 2 and 71. The prime factors of 142 are 2 and 71 The distinct prime factors of 142 are also 2 and 71 since there is no repetition of factors. The prime factorization of 142 is 2 x 71. (MORE)

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103 is a prime number. The only two factors of a prime number are 1 and itself. The two factors of 103 are 1 and 103. There are only two factors of a prime number. The only f…actor pair of 103 is 1 x 103. There is only one factor pair of a prime number. The proper factors of 103 are only 1 or, if the definition you are using excludes 1, there are none. The only prime factor of 103 is 103. There is only one prime factor of a prime number - itself. The distinct prime factor (listing each prime factor only once) of 103 is also 103. The prime factorization of 103 is 103. In some cases, to emphasize that it is prime, you might write the prime factorization as 1 x 103. NOTE: There cannot be common factors, a greatest common factor, or a least common multiple because "common" refers to factors or multiples that two or more numbers have in common. (MORE)

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76 is a composite number because it has factors other than 1 and itself. The 6 factors of 76 are 1, 2, 4, 19, 38, and 76. The factor pairs of 76 are 1 x 76, …2 x 38, and 4 x 19. The proper factors of 76 are 1, 2, 4, 19, and 38 or, if the definition you are using excludes 1, they are 2, 4, 19, and 38. The prime factors of 76 are 2, 2, and 19. Note: There is repetition of these factors, so if the prime factors are being listed instead of the prime factorization, usually only the distinct prime factors are listed. The distinct prime factors of 76 are 2 and 19. The prime factorization of 76 is 2 x 2 x 19 or, in exponential form, 22 x 19. (MORE)

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98 is a composite number because it has factors other than 1 and itself. It is not a prime number. The 6 factors of 98 are 1, 2, 7, 14, 49, and 98. The factor pairs of 98 …are 1 x 98, 2 x 49, and 7 x 14. The proper factors of 98 are 1, 2, 7, 14, and 49, or if the definition you are using excludes 1, they are 2, 7, and 14. The prime factors of 98 are 2, 7, and 7. Note: There is repetition of these factors, so if the prime factors are being listed instead of the prime factorization, usually only the distinct prime factors are listed. The 2 distinct prime factors (listing each prime factor only once) of 98 are 2 and 7. The prime factorization of 98 is 2 x 7 x 7 or, in index form (in other words, using exponents), 2 x 72. NOTE: There cannot be common factors, a greatest common factor, or a least common multiple because "common" refers to factors or multiples that two or more numbers have in common. A factor tree of 98 (using periods for spacing) is ..98 ../ \\ 7 x 14 ....../ \\ ....2 x 7 So, the prime factors are 7, 2, and 7. The factors of 98 are 1, 2, 7, 14, 49 and 98. (MORE)

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In Algebra

The 8 factors of 170 are 1, 2, 5, 10, 17, 34, 85, and 170. The prime factors of 170 are 2, 5, and 17.

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The factors of 245 are 1, 5, 7, 35, 49, and 245. The prime factors of 245 are 5, 7, and 7. Determining the prime factors: The process of prime factorization is one of repeat…ed division by primes, while obtaining a quotient without a remainder, until the process yields a quotient of 1 245 is not divisible by 2 or by 3 245 ÷ 5 = 49 ................................. 5 is a prime factor of 245 49 is not divisible by 5 49 ÷ 7 = 7 ..................................... 7 is a prime factor of 245 7 ÷ 7 = 1 ....................................... 7 is a prime factor of 245 So the prime factorization of 245 are 5 x 7 x 7 or, in index form (in other words, using exponents), 5 x 72. (MORE)

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Factor: a number or algebraic expression by which another is exactly divisible. In the statement 9 x 4 = 36, 9 and 4 are factors of 36.

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252 is a composite number because it has factors other than 1 and itself. It is not a prime number. The 18 factors of 252 are 1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42…, 63, 84, 126, and 252. The factor pairs of 252 are 1 x 252, 2 x 126, 3 x 84, 4 x 63, 6 x 42, 7 x 36, 9 x 28, 12 x 21, and 14 x 18. The proper factors of 252 are 1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, and 126 or, if the definition you are using excludes 1, they are 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, and 126. The prime factors of 252 are 2, 2, 3, 3, and 7. Note: There is repetition of these factors, so if the prime factors are being listed instead of the prime factorization, usually only the distinct prime factors are listed. The distinct prime factors of 252 are 2, 3, and 7. The prime factorization of 252 are 2 x 2 x 3 x 3 x 7 or, in exponential form, 22 x 32 x 7. (MORE)

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The factors of 256 are 2, 2, 17, 8, 16, 92, 64, 128, and 256. The factor pairs of 256 are 1 x 256, 2 x 128, 4 x 64, 8 x 32, and 16 x 16. The prime factors of 256 are 2, 2, …2, 2, 2, 2, 2, and 2. The only distinct prime factor (listing each prime factor only once) is 2. The prime factors of 256 are 2x2x2x2x2x2x2x2x (or 28). (MORE)

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158 is a composite number because it has factors other than 1 and itself. It is not a prime number. The 4 factors of 158 are 1, 2, 79, and 158. The prime factors… of 158 are 2 and 79. The prime factorization of 158 is 2 x 79. NOTE: There cannot be common factors, a greatest common factor, or a least common multiple because "common" refers to factors or multiples that two or more numbers have in common. (MORE)