Primes / Is 2 prime?

Is 2 a Prime Number?

Yes

2 is prime: nothing below 2 needs checking as a divisor, since √2 < 2. 2 has no prime below it; the next one up is 3, 1 away. 2 shares no factor with 2-12; 2's divisors start beyond that range. 2 is even, digit sum 2 for 2, digital root 2 for 2. 2 has 5 primes within 10 of 2.