SOLUTION: Are 153 and 42 relatively prime? If not, what common factor do both numbers share?

Question 1096996: Are 153 and 42 relatively prime? If not, what common factor do both numbers share?
Found 2 solutions by Alan3354, greenestamps:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Are 153 and 42 relatively prime? If not, what common factor do both numbers share?
---------
Factor the 2 numbers, then you'll know.

Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!

Pick the number that is "easier" and find its prime factorization. Then see if any of those prime factors divide into the other number evenly.
RELATED QUESTIONS
Two positive integers are relatively prime if they have no common factor other than 1.... (answered by math_helper)
There are 1859 balls inside an urn that are numbered individually from 1 to 1859. A ball... (answered by ikleyn)
If we have a box containing slips of paper with the following numbers:... (answered by Edwin McCravy)
Two positive integers M and N are defined to be relatively prime if GCF(M, N) = 1.... (answered by consc198,math_iz_hard)
Explain why x^2 + 5x + 8 is prime (not factorable). How do you know? Give 2 examples of a (answered by richwmiller)
Let a not equal 0, b and c be integers with a and b relatively prime. Show that if a|b*c (answered by venugopalramana)
Hi. I'm teaching myself Algebra for the GRE because I somehow missed all the math in... (answered by ewatrrr)
the sum of 2 odd number is 42 they are both prime mumbers and the differnce of the two... (answered by rfer)
If x and 10 are relatively prime natural numbers, hen x could be a multiple of (A)9... (answered by stanbon)