CBSE · Class 6-12

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Class 6 · Ganita Prakash · Unit 5: Prime Time

Prime Numbers

Lesson 1 of 4

Two factors only:

1

and itself. First primes:

2,3,5,7,11,13,17,19,\ldots

. Only even prime is

2

. Sieve of Eratosthenes lists primes up to

N

.

Prime Factorisation

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