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step 1: list all of the prime numbers that go into 36 and 145. 2*2*3*3=36 5*29=145 step 2: find all the common prime numbers between both sets. because there are no common prime numbers, the answer has to be 1.
-- List all the divisors (factors) of 36. The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36 . -- Check over the list, and mark all the ones that are prime numbers. There are only two of them, so I'll let you handle that part.
Look up a list of prime numbers (a Google search for "prime numbers" or "list of prime numbers" should do); every number (greater than 1) that is NOT a prime number is composite.
All prime numbers are divisible by 1. There are an infinite amount of them, so it is impossible to list them.
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