(Anglų) : Prime number
Apibrėžimas amžius 9 lygis-ang. 1
A prime number is a number with exactly two factors, which are one, and itself.
2 has the factors 1 and 2;
3 has the factors 1 and 3;
5 has the factors 1 and 5;
11 has the factors 1 and 11
Numbers which are not prime are called composite numbers.
2 has the factors 1 and 2;
3 has the factors 1 and 3;
5 has the factors 1 and 5;
11 has the factors 1 and 11
Numbers which are not prime are called composite numbers.
Finansuojamas: EU Socrates Minerva, HeyMath!, Cambridge University Press