in reply to Re^4: Simple arithmetic?
in thread Simple arithmetic?

There is no way to calculate LCM which isn't useful for integer factorization

Hm. Factoring an integer: factors( i ).

Least common multiple: lcm( i, j ).

If I need to factor (say) 100, what other integer do I substitute for xxx in: lcm( 100, xxx );?

and vice versa

So, factors( i ) == ... lcm( i, ??? )... and lcm( i, j ) == ... factors( i ) ....;.

Isn't it a bit of a problem if you need lcm() to discover factors; and factors to discover lcm()?

Your assertion is as devoid of logic and meaning; as the "usefulness of lcm to integer factorisation" is, to the question asked in the OP.

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