21, 55, 77, and 93 are composite numbers. 23 is a prime.
No, the number 55 is composite because it has factors other than 1 and itself. Its factors are 1, 5, 11, and 55.
No, 23 is not a triangular number. Here are a few examples of triangular numbers: 21, 28, 55, 45, 78 and 91.
The composite factors of 1485 are 9, 15, 27, 33, 45, 55, 99, 135, 165, 297, 495, 1485
15, 49, 55, 87, 91,105 are the composite numbers.
composite because it has more than two factors
No, the number 55 is composite because it has factors other than 1 and itself. Its factors are 1, 5, 11, and 55.
27 and 55 are composite numbers but 13 is a prime number
No, 23 is not a triangular number. Here are a few examples of triangular numbers: 21, 28, 55, 45, 78 and 91.
55 is a composite number because it has other factors aside from 1 and itself. The other factors of 55 are 5 and 11.
yes it is. - turtles rock man :-)
It has more than two factors.
Anything that isn't 1, 5, 11, 55
21 miles / 55 mph = 0.38 hours, or 23 minutes
The composite factors of 1485 are 9, 15, 27, 33, 45, 55, 99, 135, 165, 297, 495, 1485
Answer:55 is not a prime number. It is a composite number.Definition:A prime number has exactly two factors: 1 (also known as unity) and itself. A composite number has more than two factors; in other words, it has at least one factor besides 1 and itself.Explanation:Any number ending in 0 or 5 is evenly divisible by 5, so it has 5 as a factor. Thus, 55 is also divisible by 5, so it is a composite number.
Composite 55 / 11 = 5
15, 49, 55, 87, 91,105 are the composite numbers.