Sharing an Easy way to remember PRIMES

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Sharing an Easy way to remember PRIMES

by akhilsuhag » Fri Jan 30, 2015 5:15 am
Just came across an excellent way to remember primes till 100 and I thought I would share. Only 2 is an even Prime and 5 is the only prime that ends with 5- the others end with 3/7/9. So here we go (the red coloured are not primes)

2, 3, 5, 7

11, 13, 17, 19 || 23, 29 || 31, 37
41, 43, 47, 49 || 53, 59 || 61, 67
71, 73, 77, 79 || 83, 89 || 91, 97

I hope it helps ;)

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