h-ow-do-we-know-2017-and-another-number-is-a-prime-number-

Question Number 10050 by ridwan balatif last updated on 22/Jan/17

h ow do we know 2017 and another number is a prime number ?

Commented by prakash jain last updated on 22/Jan/17

2017 is a prime number .

Since it has only two factors

1 and 2017 .

Commented by ridwan balatif last updated on 22/Jan/17

i mean, example 3571 is prime number or not ?

if prime number, how can we know 3571 has 2 factor 1 and 3571 ?

if not a prime number, how can we know that ?

Commented by mrW1 last updated on 22/Jan/17

t h e r e i s n o g e n e r a l w a y o r e v e n a

f o r m u l a t o c h e c k i f a n u m b e r i s a

p r i m e n u m b e r . i n i n t e r n e t y o u m a y

f i n d t o o l s w h i c h c a n h e l p y o u t o c h e c k

i f a n u m b e r i s p r i m e o r w h i c h f a c t o r s

i t h a s .

i p e r s o n a l l y u s e a f r e e a p p c a l l e d^{'} B i g

I n t e g e r {C a l c u l a t o r}^{'} f o r t h i s p u r p o s e .

Commented by mrW1 last updated on 22/Jan/17

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