801 (number)

← 800 801 802 →
List of numbers — Integers ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	eight hundred one
Ordinal	801st (eight hundred and first)
Factorization	3^2× 89
Roman numeral	DCCCI
Binary	11001000012
Ternary	10022003
Quaternary	302014
Quinary	112015
Senary	34136
Octal	14418
Duodecimal	56912
Hexadecimal	32116
Vigesimal	20120
Base 36	M936

801 (eight hundred and one) is the natural number following 800 and preceding 802.

801 is the sum of a square and positive cube in more than one way, and a sum of distinct positive cubes in more than one way:^[1][2]

$801 = 17^2 + 8^3 = 26^2 + 5^3 = 1^3 + 2^3 + 4^3 + 6^3 + 8^3 = 2^3 + 4^3 + 9^3.$

In the gematria of 2nd century bishop Irenaeus, 801 stands for both the Greek word for a dove, and for Alpha and Omega, and therefore represents God in two ways.^[3]

See also

• 801 (disambiguation)

References

1. "Sloane's A055393 : Sum of a square and a nonnegative cube in more than one way", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
2. "Sloane's A003998 : Numbers that are a sum of distinct positive cubes in more than one way", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
3. Barry, Kieren (1999), The Greek Qabalah: Alphabetical Mysticism and Numerology in the Ancient World, Weiser Books, pp. 110–111, ISBN 9781609252274.