#semiprimes — Public Fediverse posts

One day, one decomposition
A001358: Semiprimes (or biprimes): products of two primes

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/Semiprimes.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/Semiprimes.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/Semiprimes.html

#decompwlj #math #mathematics #sequence #OEIS #javascript #php #3D #numbers #semiprimes #products #primes #PrimeNumbers #graph #threejs #webGL

One day, one decomposition
A251728: Semiprimes p*q for which p <= q < p^2

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A251728.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A251728.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A251728.html

#decompwlj #math #mathematics #sequence #OEIS #javascript #php #3D #numbers #semiprimes #graph #threejs #webGL

One day, one decomposition
A248201: Numbers n such that n-1, n and n+1 are all squarefree semiprimes

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A248201.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A248201.html

#decompwlj #math #mathematics #sequence #OEIS #javascript #php #3D #numbers #squarefree #semiprimes #graph #threejs #webGL

One day, one decomposition
A228183: Semiprimes generated by the Euler polynomial x^2 + x + 41

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A228183.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A228183.html

#decompwlj #math #mathematics #sequence #OEIS #javascript #php #3D #numbers #semiprimes #Euler #polynomial #graph #threejs #webGL

One day, one decomposition
A157352: Products (semiprimes) of two distinct safe primes

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A157352.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A157352.html

#decompwlj #math #mathematics #sequence #OEIS #javascript #php #3D #numbers #products #safe #primes #PrimeNumbers #semiprimes #graph #threejs #webGL

One day, one decomposition
A138511: Semiprimes where the larger prime factor is greater than the square of the smaller prime factor, short: semiprimes p*q, p^2 < q

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A138511.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A138511.html

#decompwlj #math #mathematics #sequence #OEIS #javascript #php #3D #numbers #semiprimes #primes #PrimeNumbers #factor #square #graph #threejs #webGL

One day, one decomposition
A109373: Semiprimes of the form semiprime + 1

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A109373.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A109373.html

#decompwlj #maths #mathematics #OEIS #javascript #php #3D #numbers #semiprimes #primes #PrimeNumbers #graph #threejs #webGL

One day, one decomposition
A106349: Primes indexed by semiprimes

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A106349.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A106349.html

#decompwlj #maths #mathematics #OEIS #javascript #php #3D #numbers #primes #PrimeNumbers #indexed #semiprimes #graph #threejs #webGL

One day, one decomposition
A105571: Numbers m such that m - 2 and m + 2 are semiprimes

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A105571.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A105571.html

#decompwlj #maths #mathematics #OEIS #javascript #php #3D #numbers #primes #PrimeNumbers #semiprimes #graph #threejs #webGL

One day, one decomposition
A100484: The primes doubled (even semiprimes)

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/Even_semiprimes.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/Even_semiprimes.html

#decompwlj #maths #mathematics #OEIS #javascript #php #3D #numbers #primes #PrimeNumbers #doubled #even #semiprimes #graph #threejs #webGL

One day, one decomposition
A092207: Semiprimes k such that k+2 is also a semiprime

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A092207.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A092207.html

#decompwlj #maths #mathematics #OEIS #javascript #php #3D #numbers #semiprimes #primes #PrimeNumbers #graph #threejs #webGL

One day, one decomposition
A092192: Semiprimes that are the sum of two successive semiprimes

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A092192.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A092192.html

#decompwlj #maths #mathematics #OEIS #javascript #php #3D #numbers #sum #semiprimes #primes #PrimeNumbers #graph #threejs #webGL

One day, one decomposition
A086006: Primes p such that 2*p-1 and 2*p+1 are semiprimes

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A086006.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A086006.html

#decompwlj #maths #mathematics #OEIS #javascript #php #3D #numbers #primes #semiprimes #primenumbers #graph #threejs #webGL

One day, one decomposition
A086005: Semiprimes sandwiched between semiprimes

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A086005.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A086005.html

#decompwlj #maths #mathematics #OEIS #javascript #php #3D #numbers #semiprimes #composite #primes #primenumbers #graph #threejs #webGL

One day, one decomposition
A077068: Semiprimes of the form prime + 1

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A077068.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A077068.html

#decompwlj #maths #mathematics #sequence #OEIS #javascript #php #3D #numbers #semiprimes #prime #primenumbers #form #graph #threejs #webGL

One day, one decomposition
A070552: Semiprimes k such that k+1 is also a semiprime

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A070552.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A070552.html

#decompwlj #maths #mathematics #sequence #OEIS #javascript #php #3D #numbers #primenumbers #semiprimes #graph #threejs #webGL

One day, one decomposition
A062721: Numbers k such that k is a product of two primes and k-2 is prime

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A062721.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A062721.html

#decompwlj #maths #mathematics #sequence #OEIS #javascript #php #3D #numbers #semiprimes #primes #primenumbers #graph #threejs #webGL

One day, one decomposition
A056809: Numbers k such that k, k+1 and k+2 are products of two primes

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A056809.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A056809.html

#decompwlj #maths #mathematics #sequence #OEIS #javascript #php #3D #numbers #primes #semiprimes #graph #threejs #webGL