Prime numbers from 125 to 160: 127,131, 137, 139, 149, 151, 157
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If the GCF of a given pair of numbers is 1, the LCM will be equal to their product. If the GCF is greater than 1, the LCM will be less than their product. Or, stated another way, if the two numbers have no common prime factors, their LCM will be their product.
If the GCF of two numbers is 1, their LCM will be their product. Such numbers are called relatively prime, or co-prime. Any two prime numbers (like 3 and 5) will be that way, but the numbers don't have to be prime (like 4 and 9).
Two numbers that have no common factors greater than one are considered co-prime or relatively prime. Their LCM is their product.
The LCM of two numbers will never be less than the GCF.
2 x 5 x 7 = 70