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# prime factorization of 405

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641
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prime factorization of 405

Guest Mar 20, 2015

#3
+94105
+5

Thanks Guys - both these answers have great value.

I have added this question to reference material.

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Melody  Mar 21, 2015
#1
+92674
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Just type this into the on-site calculator  ....

factor(405)

Then....hit " ="

CPhill  Mar 20, 2015
#2
+17746
+5

Since 405 ends in 5, it is divisible by 5 --

405  =  5 x 81

Since 81 = 9 x  9 --

405  =  5 x 9 x 9

Since 9 = 3 x 3 --

405  =  5 x 3 x 3 x 3 x 3

Since those factors can't be reduced:

405  =  34 x 5

geno3141  Mar 20, 2015
#3
+94105
+5

Thanks Guys - both these answers have great value.

I have added this question to reference material.

http://web2.0calc.com/questions/reference-material

The reference material thread is available for everyone.  It is one of the 'sticky' threads.

Melody  Mar 21, 2015