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# Why is 2 a prime factor of 70?

Updated: 12/11/2022

Wiki User

12y ago

because 70 is an even number, and every even number has 2 as a factor.

Wiki User

12y ago

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Q: Why is 2 a prime factor of 70?
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### What is the greatest prime factor in the prime factorization of 70?

Greatest Prime Factor of 70The prime factorization of 70 is 2 X 5 X 7, so the greatest prime factor in the prime factorization of 70 is 7.

2 x 5 x 7 = 70

2 x 5 x 7 = 70

2 x 5 x 7 = 70

### Which of the follwing is a non- prime factor of 70?

Any of the numbers except for 2, 5 and 7 which are prime factors of 70

### What is a prime number factor of 42 less than 10 factor of 70?

2 and 7 are prime numbers less than 10 that are factors of 42 and 70.

### What prime factor do 75 and 90 have in common?

The prime factors of 70 are 2, 5, and 7. The prime factors of 90 are 2, 3, 3, and 5. The prime factors that 70 and 90 have in common are 2 and 5. The greatest common factor of 70 and 90 is the product of the prime factors they have in common, so it is 2 x 5 = 10.

### What is the greatest prime factor of 70 and 80?

As a product of its prime factors: 2*5*7 = 70

### What is the greatest common factor of 70 and 80?

The greatest common factor of 70 and 80 is 10. The prime factorization of 70 is 2*5*7 The prime factorization of 80 is 2*2*2*2*5 The GCF is 2*5 = 10

### How do you do the prime factorization for 70?

Use a factor tree. 70 35,2 7,5,2 2 x 5 x 7 = 70

### Determine which is not a prime factor of 70 A.2 B.5 C.7 D.10?

10 is not prime and can't be a prime factor.

### What is the greatest common factor of 28 and 70?

14 One way to determine the greatest common factor is to find all the factors of the numbers and compare them. The factors of 28 are 1, 2, 4, 7, 14, and 28. The factors of 70 are 1, 2, 5, 7, 10, 14, 35, and 70. The common factors are 1, 2, 7, and 14. Therefore, the greatest common factor is 14. The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together. The prime factors of 28 are 2, 2, and 7. The prime factors of 70 are 2, 5, and 7. The prime factors in common are 2 and 7, so the greatest common factor is 2 x 7 = 14.