Friday, September 21, 2012

860

860 = 2 x 2 x 5 x 43.

860 is the sum of four consecutive primes (A034963): 860 = 199 + 211 + 223 + 227.

860 is the sum of ten positive fifth powers (A003355): 860 = 35 + 35 + 35 + 25 + 25 + 25 + 25 + 15 + 15 + 15.

860 and 861 each have three distinct prime factors (A140077).

860 is the number of hexagons that can be formed with perimeter 35 (in other words, partitions of 35 into six parts such that the sum of any five is more than the sixth) (A069907).


Source: On-Line Encyclopedia of Integer Sequences

No comments: