There are infinitely many pairs but probably the simplest to work out, and remember, is 1 * 306
To find what equals 306 by multiplying, we can break down 306 into its prime factors. 306 = 2 x 3 x 3 x 17. Therefore, the numbers that equal 306 by multiplying are the combinations of these prime factors, such as 2 x 3 x 51, 2 x 9 x 17, 3 x 3 x 34, etc.
2 x 14 = 28
306 = 3*102 = 6*51 = 18*17 The numbers are 17 and 18
1 x 306, 2 x 153, 3 x 102, 6 x 51, 9 x 34, 17 x 18 = 306153 + 153 = 306
NB When finding the s of a number. Inspect the number. If it is even , as in this case (306 ; endsc in ;6;) , then it will divide by '2'. Hence 2 x X = 306 X = 306/2 = 153 So the first pair on numbers are 2 & 153. Further inspection of the number, indicates it is a factor of '3' . 3 x X = 306 X = 306/3 = 102 So a second pair of numbers are 3 & 102 NB When finding the factors of a number. If it ends in an even number (2,4,6,8,0) , then it will divide by '2' If it ends in '0' or '5' , then it will divide by '5'. If the digits sum to '9' , then it will divide by '9' ( 306 ; 3 + 0 + 6 = 9), So 306 will divide by '9' . Hence 34 The only two number you have painstakingly check are '3' & '7'.
286 = 2 x 11 x 13
the product
It is not. When multiplying two whole numbers you need not be concerned about placing the decimal point in the answer.
Only when their GCF is 2.
A 3 or 4 digit number.
1 2 3 6 9 17 18 34 51 102 153 306.
120 = 2*2*2*3*5, so there is 5 prime numbers, no 2 prime numbers