cheating it is not aloud.
6487 is not prime. 6487 = 13 * 499
yes
it is a staircase composite because it has three prime factors which are 7, 41 and 271. hope i could help.
802 + 6487 = 7289
817 714 6487 817 714 6487 817 714 6487
It is a stair case composite as it is the product of 7, 41, and 271.
A number is called a staircase composite number when it has three prime factors that have different sized digits: the first is one digit, the second is two digits and the third is three digits. For example: [7] [41] [271] x 77 777 77 777 would be the staircase composite number.
let me show you :) Text me my names alex, 832-692-6487
The largest staircase comosite largest staircase composite is the number 2223 because 1 is not counted as a prime so the 1 digit prime is 2, the smalles 2 digit prime is 11 and smallest 3 digit prime is 101
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The Young and the Restless - 1973 1-6487 was released on: USA: 20 October 1998