Numbers 800,000,000,000s

800,000,000,003

[Math.]  (Sequence of numbers 80…032 = 640…0480…09).

800,000,000,0032 = 640000000004800000000009 =

= (–6+4–0000000004+800000000009)2.

800,000,000,005

[Math.]  (Sequence of numbers 80…052 = 640…080…025).

800,000,000,0052 = 640000000008000000000025 =

= (–6+4+000000000+800000000002+5)2.

800,046,169,209

[Math.]   Sum of the first 1337 cube numbers:

13+…+13373 = 800,046,169,209 = (1+…+1337)2 = 894,4532.

800,874,647,056

[Math.]  (1+2+…+43)4 = [(15+25+…+435)+(17+27+…+437)]/2.

802,441,515,681

[Math.]  Sum of the first 1338 cube numbers:

13+…+13383 = 802,441,515,681 = (1+…+1338)2 = 895,7912.

804,842,236,900

[Math.]  Sum of the first 1339 cube numbers:

13+…+13393 = 804,842,236,900 = (1+…+1339)2 = 897,1302.

807,248,340,900

[Math.]   Sum of the first 1340 cube numbers:

13+…+13403 = 807,248,340,900 = (1+…+1340)2 = 898,4702.

809,659,835,721

[Math.]  Sum of the first 1341 cube numbers:

13+…+13413 = 809,659,835,721 = (1+…+1341)2 = 899,8112.

809,783,460,395

[Math.]  Two consecutive sums of consecutive square numbers:

809,783,460,395 = 664302+…+666122 = 666132+…+667942.