The prime factors of 126 are 2 x 3 x 3 x 7.
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There are no prime numbers between 114 and 126.
Factor tree:126|63 and 2|21 and 32 x 3 x 21 = 126
They are 3 and 7
126 and 49 are not relatively prime because they have 7 as a common prime factor.
42, 84, 126, 168