21 multiplies to 21 to make it 441
21
3 x 3 x 7 x 7 = 441
You need at least two numbers to find a GCF.
No, prime numbers refer to whole numbers, not decimals.
The numbers are 21 and 24. 576 - 441 = 135
441
1764
2 + 3 + 5 + 431 = 441
3*3*7*7 = 441
It is: 3*3*7*7 = 441
441 divides evenly by these numbers: 1 3 7 9 21 49 63 147 and 441.