### Point to Ponder: Prime Factorisation

A number's prime factorisation is
23 X 32 X 52
Is the number even or odd? Explain your reasoning.
Name four other factors of this number, other than 2, 3 and 5.

1. even, as there is a factor 2, anything times 2 will be even

2. even, 2 is a factor

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4. The number is an even number as it has a number 0 in the ones place after mental calculation

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6. I am not sure :-(

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8. the 2 is even so will only get even when powered, odd times odd is even and even times is even so the answer is even.
6, 25,10 and 30

9. Even. It is a multiple of 2

1. Factors: 1, 4, 10 & 20

10. Even, Anything times 2 will be even

11. Even. Every index notation has the even number '2' in it.

1. 1x1800, 4x450, 5x360, 6x300.

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13. The number is even.I did mental calculations and arrived at the answer 360,(which is an even number)4 other factors of 360 is 4,6,90 and 60.

14. I am not sure. :(

15. 4,8,9 and it is even like the number 6

16. Even. Because any number that is multiplied by a even number you will get an even answer.
The four factors are 1,4 and 6.

1. The four factors are 1,4,6 and 30.... Sorry i forgot to put the 30 when typing.

17. even. 2 to the power of 3 is 8, 3 to the power of 2 is 6, 5 to the power of 2 is 10, hence, all is even number .

the four other factors are : 4, 6 , 8 and 9.

18. It is even as the product of the base is even .

19. Multiplying anything by an even number gives you an even number, so the answer must be even.

20. Even. When there is an even number in the multiplication, in this case 2, the answer will always be even even when powered.

21. Even.
When any number is multiplied by an even number, which is 8 (2 x 2 x 2 = 8), its product will also be an even number, regardless of whether it is even or odd.
1, 4, 6.

22. index notation with a 2 is even.

23. it should be even as when the number is multiplied by an even it will become a even number

1. 2x3=6,2x7=14...

24. even, as the number is divisible by 2 . other factors are 6,4,,8 and 12

25. 2 to the power of 3 x 3 to the power of 2 x 5 to the power of 2= 8x9x25=(72x25)
Look at the digits in the ones place, 2x5= 10
10 is an even number so the umber is an even number.

1. 10 is an even number so the number is an even number.