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Why is 25 considered to be a composite number?
A composite number is a number that has at least 3 factors. (It can be evenly divided by at least 3 number.) 25 has 3 factors: 1, 5, and 25.
What is the least four digit number that has 2 3 5 and 7 as factors?
1050.
What is the least three-digit odd number that has the factors 3 5 7?
It is 105
What is the least number with 5 factors?
16
What is the least number that has 5 factors?
16
Is 45 a prime or composite number how do you know?
45 is a composite number. A number is composite if it can be evenly divided by and least 3 numbers (if it has at least 3 factors). Any composite number has at least one factor other than one and itself. 45 has 6 factors: 1, 3, 5, 9, 15, and 45.
What is the least common factor of 3 4 and 5?
The factors of 3 are 1 and 3.The factors of 4 are 1, 2, and 4.The factors of 5 are 1 and 5.The only common factor of 3, 4, and 5 is 1. The least common factor is 1.
Can you find the smallest number that has 1 2 3 4 5 as factors. What is the special name for this number?
The least common multiple, or LCM, of 1, 2, 3, 4 and 5 is 60.
Can odd numbers under 50 have at least 5 factors?
Using "^" for powers. I believe the smallest ODD number with exactly 5 factors would be 3^4 = 81. Since you say "at least", we could also consider numbers with 6 factors; the smallest of those would be 3^2 x 5 = 45. So that would be a number under 50.
What is the LCM of 115 and 15?
The LCM (Least Common Multiple) of 115 and 15 is 345. The prime factors of 115 are 5 and 23. The prime factors of 15 are 3 and 5. Multiply the smallest encountered number of same factors, 3, 5, and 23, to get 345.
What is the least number that has 4 5 and 6 as factors?
Its...........60!
What is the odd number under 50 with at least 5 factors?
45 has six factors.
