The first few prime numbers are 2, 3, 5, 7 11 … , 13, 17, 19, 23, 29, 31 and so on... A factor is a number which, when multiplied by another number, will give a third number.... such as 10 and 4 are factors of 40; or 25 and 6 are factors of 150.
http://www.answers.com/Q/What_are_the_factors_and_prime_factors_of_61
The prime factorization of 61 is 61. In some cases, to emphasize that it is prime, you might write the prime factorization as 1 x 61. NOTE: There cannot be common factors, a greatest common factor, or a least common multiple because common refers to factors or multiples that two or more numbers have in common.
http://www.answers.com/Q/What_are_the_factors_and_prime_factors_of_61
There is only one prime factor of a prime number-itself. The distinct prime factor (listing each prime factor only once) of 61 is also 61. The prime factorization of 61 is 61. In some cases, to emphasize that it is prime, you might write the prime factorization as 1 x 61.
http://www.answers.com/Q/What_are_the_factors_and_prime_factors_of_61
The prime factors of 12 are 2 and 3. A prime number is a number greater than 1 that cannot be divided by any number except itself and 1. Both 2 and 3 are prime factors of 12 because they are prime numbers that can be divided into 12 with nothing remaining.
http://www.ask.com/math/prime-factors-64-bc0192903d088885
A prime number is a positive integer that has exactly two positive integer factors, 1 and itself. For example, if we list the factors of 28, we have 1, 2, 4, 7, 14, and 28. That's six factors. If we list the factors of 29, we only have 1 and 29.
http://mathforum.org/dr.math/faq/faq.prime.num.html
Here's an example: Find the prime factors of the number 84:     84   / \\   42 x 2 (84 is 42 times 2)   / \\   21 x 2 (42 is 21 times 2)   / \\   7 x 3 (21 is 7 times 3)     (7 and 3 are both prime, so we stop!)    So the prime factors of 84 are 7 x 3 x 2 x 2.
http://www.answers.com/Q/What_are_the_factors_and_prime_factors_of_61
The easiest way to find the prime factors of 64 is to being by dividing it by 2, which results in 2 x 32. Since 2 is a prime number, the first prime factor is 2. The number 32 can be divided by 2, which results in 2 x 16.
http://www.ask.com/math/prime-factors-64-bc0192903d088885
The easiest way to find the prime factors of 64 is to being by dividing it by 2, which results in 2 x 32. Since 2 is a prime number, the first prime factor is 2. The number 32 can be divided by 2, which results in 2 x 16. The second prime factor of 64 is 2.
http://www.ask.com/math/prime-factors-64-bc0192903d088885
Note that there are only two prime factors of 39, both of which are prime numbers. 2). 62 = 2 x 31. Note that there are only two prime factors of 62, one is 31, which is a prime number and the other is a 2, which is also a prime factor but 2 is an even number.
http://www.mathcaptain.com/number-sense/prime-factorization.html
The prime factors of 30 are the numbers 2, 3, and 5. 1  Begin with the lowest prime number that is a factor of 30. 2  Divide by 2 to get the factor 15. 3  Now use the lowest prime number that is a factor of 15. 4  Divide by 3 to get the factor 5 which is also a prime number.
http://www.rasmus.is/uk/t/U/st23k01.HTM
prime factures of 61
The prime factorization of 61 is 61.