3,200,000,000
About 3,200,000,000 base pairs make up one copy of the human genome, on a complete gapless assembly. The reference sequence most often quoted is nearer 3.1 billion.
- Even
- Composite
Where 3,200,000,000 fits
Why 3,200,000,000 is special
The two figures are the same genome measured twice. The Human Genome Project's 2003 announcement was not the end of it: the last eight per cent, mostly repetitive regions no method could read through, was only completed in 2022, and those regions are the difference between 3.1 and 3.2 billion. The 'finished' genome of 2003 had hundreds of gaps that were known about and left in, so a count taken from it is genuinely smaller rather than merely less precise.
3,200,000,000 is part of
Factors & digit properties
- Divisors (126)
- 1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 320, 400, 500, 512, 625, 640, 800, 1000, 1024, 1250, 1280, 1600, 2000, 2048, 2500, 2560, 3125, 3200, 4000, 4096, 5000, 5120, 6250, 6400, 8000, 8192, 10000, 10240, 12500, 12800, 15625, 16000, 20000, 20480, 25000, 25600, 31250, 32000, 40000, 40960, 50000, 51200, 62500, 64000, 78125, 80000, 100000, 102400, 125000, 128000, 156250, 160000, 200000, 204800, 250000, 256000, 312500, 320000, 390625, 400000, 500000, 512000, 625000, 640000, 781250, 800000, 1000000, 1024000, 1250000, 1280000, 1562500, 1600000, 2000000, 2500000, 2560000, 3125000, 3200000, 4000000, 5000000, 5120000, 6250000, 6400000, 8000000, 10000000, 12500000, 12800000, 16000000, 20000000, 25000000, 25600000, 32000000, 40000000, 50000000, 64000000, 80000000, 100000000, 128000000, 160000000, 200000000, 320000000, 400000000, 640000000, 800000000, 1600000000, 3200000000
- Prime factorisation
- 2^13 × 5^8
- Digit sum
- 5
- Digital root
- 5
Representations
- Decimal
- 3200000000
- Scientific notation
- 3.200 × 10^9
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
Binary (base 2) as modelled here goes up to 1,000,000,000.
Octal
Octal (base 8) as modelled here goes up to 1,000,000,000.
Hexadecimal
Hexadecimal (base 16) as modelled here goes up to 1,000,000,000.
Other mathematical patterns
- Abundant number
- Happy number
- Powerful number
- Harshad (Niven) number
Related numbers & connections
3200000000 appears in Numbers in living things, the topic covering numbers that carry a documented biology or natural-history fact.
Numbers Around Us
- appears inLiving things
why?
Strength 0.50, confidence "high".
Science
Base pairs in a complete assembly of the human genome is 3,200,000,000 (humans, one copy of the genome). The reference sequence quoted almost everywhere is nearer 3.1 billion. The difference is the eight per cent of repetitive sequence that no method could read through until 2022, which the 2003 'finished' genome left as known gaps.
DocumentedScienceGeography: humans, one copy of the genome
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 15 July 2026