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What else can I help you with?
How many factors does number 81 have?
81=3*3*3*3
Is 81 a prime number or a composite number?
It is a composite number, you can get 81 by mulitpling 1*81, 3*27, and 9*9.compositeNo the number 81 is not prime it can be divided by nine.composite
Why is 81 a composite?
It has more than two distinct factors; they are 1, 3, 9, 27, 81
What are the 5 factors in 81?
Factors are just numbers 81 can be divided by. The whole number factors are 1, 3, 9, 27, and 81
What are the prime factors of 81 and 225?
The only prime factor of 81 is: 3.The prime factors of 225 are: 3 and 5.
What are all the factors of 81?
Factors are numbers you can multiply together to get another number. 81: 1, 3, 9, 27, 81
What are the prime number for 81?
The prime factors of 81 are 3 x 3 x 3 x 3.
What are the prime factors factors of 81?
3 x 3 x 3 x 3
How many factors of the number 81?
FIve: 1, 3, 9, 27, 81
Is 81 a composite number?
Yes. One of the reasons are that if you Google it, they say it's a composite #. Second, a prime number has 2 factors: 1 and itself. But 81 has 5 factors:1, 3, 9, 27, and 81.81 is a composite number 3 * 3 * 3 * 3 = 81
Do all square numbers have exactly 3 factors?
No. 81=9*9=3*27=1*81 81 has 5 factors and is a square number. 36=6*6=3*12=1*36=2*18=4*9 36 has 9 factors and is a square number. This doesn't mean that no square numbers have exactly 3 factors though, because: 9=3*3=1*9 9 has 3 factors and is a square number. 4=2*2=1*4 4 has 3 factors and is a square number. All square numbers have an odd number of factors though (because they have a whole number which multiplies by itself to get the number). Factors are whole numbers only, and not decimals. Hope this helps :)
IS 243 PRIME?
No, it's not. 243 is divisible by 3 and 81. To be prime, a number's only factors must be 1 and itself.
