104
CIV
1101000
The number 104 — factors and divisors
Abundant
104 = 2³ × 13. It has 8 divisors, adding up to 210.
Its divisors, itself excluded, add up to more than the number.
Laid out as dots
It fits as 8 × 13. The more divisors, the closer to a square.
- Prime factors
- 2³ × 13
- Divisors
- 1, 2, 4, 8, 13, 26, 52, 104
- Sum of divisors
- 210
- Sum without itself
- 106
- Coprime below it
- 48
- Digit sum
- 5
- Digital root
- 5
- Roman numeral
- CIV
- Binary
- 1101000
- Octal
- 150
- Hexadecimal
- 68
- Base 36
- 2W
- Bits
- 7 bits
- Collatz steps
- 12 steps · peaks at 104
- Prime before
- 103
- Prime after
- 107
The grid
Ten per row, twenty rows. The filled cells are primes — you can see the multiples of 2 and 5 drop out in columns.
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Numbers either side
How to read this
- The prime factors are what the number is made of. The count and sum of divisors both follow from them.
- Add the divisors, take the number away, and you get perfect, abundant or deficient.
- The length of the binary form is the bit count. 255 taking eight digits is what a byte is.
- Collatz: halve it if even, triple it and add one if odd. The count is how many moves reach 1.
Frequently asked questions
Q. Is 104 a prime number?
No. It breaks down into 2³ × 13.
Q. What are the divisors of 104?
1, 2, 4, 8, 13, 26, 52, 104 — 8 divisors in all, adding up to 210.
Q. How is 104 written in binary?
1101000, which is 7 bits. In hexadecimal it is 68.
Q. How many Collatz steps does 104 take?
It reaches 1 in 12, peaking at 104 on the way.