decompwlj 3D

Primes having only {1, 3, 4} as digits

A199341 on the OEIS · family primes

Weight–level plate of Primes having only {1, 3, 4} as digits
Click the plate to explore it in 3-D. Weight k across, level L up, both on log scales: blue in the weight class (k ≤ L), orange in the level class (k > L). The dashed diagonal is k = L.
Open in the 3-D viewerA199341 on the OEIS
Terms100,000 (n = 1 … 100,000)
Decomposable (a > 2d)99,976
Level class, k > L30,756 · 30.76 %
Weight class, k ≤ L69,220 · 69.24 %
Ties, k = L1
On the level line L = 14,323
Forced level, l ≤ d²2,161
Range of a(n)3 … 3,333,134,434,141
Range of the jump d2 … 1,666,666,666,680
Largest weight k, level L3,333,132,977,753, 1,111,044,780,443

3,396 different gaps occur, from 2 to 1,666,666,666,680; the level share is 30.76 %; 2.2 % of terms are forced level (l <= d^2); 24 terms do not decompose.

The decomposition

Every term of a strictly increasing sequence is written a(n) = k(n)·L(n) + d(n): the jump d = a(n+1) − a(n), the weight k the least divisor of a − d greater than d, the level L = (a − d)/k. A term decomposes when a > 2d; it is in the level class when k > L and in the weight class when k ≤ L. See decompwlj.com and arXiv:0711.0865, or how it works, with worked examples and a live one.