141
E141 is the copper complex of chlorophyll.
- Odd
- Composite
Where 141 fits
Why 141 is special
Substituting copper for magnesium in the molecule makes the green stable, which is a chemical fix that also makes the additive synthetic in the public mind.
141 is part of
Factors & digit properties
- Divisors (4)
- 1, 3, 47, 141
- Prime factorisation
- 3 × 47
- Digit sum
- 6
- Digital root
- 6
Representations
- Decimal
- 141
- Binary
- 10001101
- Octal
- 215
- Hexadecimal
- 8d
- Roman numeral
- CXLI
- Scientific notation
- 1.410 × 10^2
Other mathematical patterns
- Palindromic number
- Deficient number
- Semiprime
- Lucky number (mathematical sieve)
Related numbers & connections
Replacing the central magnesium with copper is what makes the plant-derived green stable enough to use.
View 140 →Everyday life
E141 copper complexes of chlorophylls replace the central magnesium ion with copper, greatly improving stability to heat and acid compared with E140.
DocumentedEveryday lifeGeography: European Union and states adopting the E number systemPeriod: 1962–
Common questions
Is 141 a prime number?
No, 141 is not prime.
What are the factors of 141?
The factors of 141 are 1, 3, 47, 141.
What is 141 in Roman numerals?
141 in Roman numerals is CXLI.
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: 3 August 2026