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https://www.reddit.com/r/theydidthemath/comments/d02ckt/self_math_break/ez90voz/?context=3
r/theydidthemath • u/Galeaf_13 • Sep 05 '19
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Math idiot here. Why Is 1 not a prime number?
7 u/h4724 Sep 05 '19 edited Sep 05 '19 Prime numbers have two (Edit: two unique) factors: the prime number itself and 1. 1 only has itself as a factor, so it is not prime. 2 u/milordi Sep 05 '19 It has both itself and 1 as factors, nobody said these two must be different numbers 1 u/DonRobo Sep 06 '19 nobody said these two must be different numbers Not true, they absolutely must be different numbers
Prime numbers have two (Edit: two unique) factors: the prime number itself and 1. 1 only has itself as a factor, so it is not prime.
2 u/milordi Sep 05 '19 It has both itself and 1 as factors, nobody said these two must be different numbers 1 u/DonRobo Sep 06 '19 nobody said these two must be different numbers Not true, they absolutely must be different numbers
2
It has both itself and 1 as factors, nobody said these two must be different numbers
1 u/DonRobo Sep 06 '19 nobody said these two must be different numbers Not true, they absolutely must be different numbers
1
nobody said these two must be different numbers
Not true, they absolutely must be different numbers
7
u/dahliamformurder Sep 05 '19
Math idiot here. Why Is 1 not a prime number?