Factors of 654 in pairs: 1 x 654, 2 x 327, 3 x 218, 6 x 109
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The numbers are: -25 and -30
If you're talking about which two prime numbers added together equals to 19, then the answer is 2 and 17. They are both prime numbers, and they add up to be 19.
If the least common multiple of two numbers equals the product of the two numbers, then the numbers are relatively prime, that is their highest common factor is 1. For example, the numbers 10 and 21: The lcm is 10 x 21 = 210 They are relatively prime since their hcf is 1.
How about: 5*275 = 1375
(65,2)(26,5)(13,10)