Best Answer

2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71

that's as far up as it goes because 72 is a composite number not a Prime number!

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Q: What are the prime numbers up to 72?

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67 and 5

67 and 5

The prime factors of 72 are: 2 and 3.

No, 72 and 252 are not relatively prime. No pair of even numbers can be relatively prime.

Factor trees create prime numbers. Prime numbers are positive. Since the prime factors of negative 72 are the same as positive 72, you might as well do positive 72. 72 36,2 18,2,2 9,2,2,2 3,3,2,2,2

73 is prime.

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67 and 5

2 and 3

72 = 8 x 9 = 23 x 32

2, 2, 2, 3 and 3 or 23*32 = 72

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