10 = 2 x 5
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1000 as a product of its prime factors is written as: 2 x 5 = 10
The primes less than 10 are 2,3,5 and 7 with a product of 210.
3 and 7 are the prime numbers because they cannot be divided by any number other than themselves and 1because 3+7 = 10 (Sum)and 3x7 = 21 (Product)
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.
There are more than 10 prime numbers