PRODUCTS
Products Overview
Mathematica
Mathematica for Students
Mathematica Home Edition
Wolfram
CDF Player
(free download)
Computable Document Format (CDF)
web
Mathematica
grid
Mathematica
Wolfram
Workbench
Mathematica
Add-Ons
Wolfram|Alpha Products
SOLUTIONS
Solutions Overview
Engineering
Aerospace Engineering & Defense
Chemical Engineering
Control Systems
Electrical Engineering
Image Processing
Industrial Engineering
Materials Science
Mechanical Engineering
Operations Research
Optics
Petroleum Engineering
Biotechnology & Medicine
Bioinformatics
Medical Imaging
Finance, Statistics & Business Analysis
Actuarial Sciences
Data Analysis & Mining
Econometrics
Economics
Financial Engineering & Mathematics
Financial Risk Management
Statistics
Software Engineering & Content Delivery
Authoring & Publishing
Interface Development
Software Engineering
Web Development
Science
Astronomy
Biological Sciences
Chemistry
Environmental Sciences
Geosciences
Social & Behavioral Sciences
Design, Arts & Entertainment
Game Design, Special Effects & Generative Art
Education
STEM Education Initiative
Higher Education
Community & Technical College Education
Primary & Secondary Education
Students
Technology
Computable Document Format (CDF)
High-Performance & Parallel Computing (HPC)
See Also: Technology Guide
PURCHASE
Online Store
Other Ways to Buy
Volume & Site Licensing
Contact Sales
Software
Service
Upgrades
Training
Books
SUPPORT
Support Overview
Knowledge Base
Learning Center
Community & Forums
Training & Free Seminars
Does My Site Have a License?
Wolfram User Portal
COMPANY
About Wolfram Research
News & Events
Wolfram Blog
Partnerships
Employment Opportunities
History of
Mathematica
Stephen Wolfram's Home Page
Contact Us
OUR SITES
All Sites
Wolfram|Alpha
Demonstrations Project
MathWorld
Integrator
Wolfram Functions Site
Mathematica Journal
Wolfram Media
Wolfram
Tones
Wolfram Science
Stephen Wolfram
DOCUMENTATION CENTER SEARCH
New to
Mathematica
?
Find your learning path
»
Mathematica
>
Mathematics and Algorithms
>
Number Theory
>
Prime Numbers
>
RiemannR
>
Mathematica
>
Mathematics and Algorithms
>
Mathematical Functions
>
Number Theoretic Functions
>
Prime Numbers
>
RiemannR
>
BUILT-IN MATHEMATICA SYMBOL
PrimePi
LogIntegral
ZetaZero
See Also »
|
Analytic Number Theory
Prime Numbers
Summary of New Features in 7.0
New in 7.0: Alphabetical Listing
New in 7.0: Mathematics & Algorithms
More About »
RiemannR
RiemannR
[
x
]
gives the Riemann prime counting function
.
MORE INFORMATION
Mathematical function, suitable for both symbolic and numerical manipulation.
For
, the Riemann prime counting function is given by
.
RiemannR
[
z
]
has a branch cut discontinuity in the complex
z
plane running from
to
.
RiemannR
can be evaluated to arbitrary numerical precision.
RiemannR
automatically threads over lists.
EXAMPLES
CLOSE ALL
Basic Examples
(2)
Evaluate numerically:
Evaluate numerically:
In[1]:=
Out[1]=
In[2]:=
Out[2]=
In[1]:=
Out[1]=
Scope
(6)
Evaluate for complex arguments:
Evaluate to high precision:
The precision of the output tracks the precision of the input:
Simple exact values are generated automatically:
RiemannR
threads element-wise over lists:
TraditionalForm
formatting:
Applications
(1)
The behavior of
RiemannR
near the origin:
The largest root of the Riemann prime counting function:
The second largest root:
SEE ALSO
PrimePi
LogIntegral
ZetaZero
MORE ABOUT
Analytic Number Theory
Prime Numbers
Summary of New Features in 7.0
New in 7.0: Alphabetical Listing
New in 7.0: Mathematics & Algorithms
New in 7