05-28-2017, 06:57 AM
Voted
The only number less than 10^14 that can be expressed as a sum of the first primes, or the first non-primes, or the first positive integers.
28 = 2+3+5+7+11 = 1+4+6+8+9 = 1+2+3+4+5+6+7
(it's probably the only number with this property)
The only number less than 10^14 that can be expressed as a sum of the first primes, or the first non-primes, or the first positive integers.
28 = 2+3+5+7+11 = 1+4+6+8+9 = 1+2+3+4+5+6+7
(it's probably the only number with this property)