Suci Cahyati (292009520) Prime number. What is prime number?? an integer that has no integral factors but itself and 1.

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Presentation transcript:

Suci Cahyati ( ) Prime number

What is prime number?? an integer that has no integral factors but itself and 1

The first few prime numbers are: 2, 3, 5, 7, 11, 13, and 17...

Let me explain Some whole number can be divided up evenly, and some can’t When a number can be divided up evenly it is a Composite Number When a number can not be divided up evenly it is a Prime Number So 6 is Composite, but 7 is Prime. 2 is Prime, 3 is Prime, 4 is Composite (=2×2), 5 is Prime, and so on...

Prime number factorization Factors "Factors" are the numbers you multiply together to get another number:

Prime Factorization "Prime Factorization" is finding which prime numbers multiply together to make the original number.

Another Method We showed you how to do the factorization by starting at the smallest prime and working upwards. But sometimes it is easier to break a number down into any factors you can... then work those factor down to primes.