Prime Pandigital Step Numbers
Public  05/12/17  6xp  Programming  64.7% 
A step number is a number whose digits are in ascending order
For example : $ 1223455567 $ is a step number
A pandigital step number is a step number which contains all digits (except 0) at least once
For example : $ 1122345556777899 $ is a pandigital step number
Find the smallest $(S)$ and largest $(L)$ 30digits prime pandigital step numbers
Answer format: S,L
Example: 111111111111223456789,123456777788888888899 // For 21 digts
[My timing: 65 sec]
For example : $ 1223455567 $ is a step number
A pandigital step number is a step number which contains all digits (except 0) at least once
For example : $ 1122345556777899 $ is a pandigital step number
Find the smallest $(S)$ and largest $(L)$ 30digits prime pandigital step numbers
Answer format: S,L
Example: 111111111111223456789,123456777788888888899 // For 21 digts
[My timing: 65 sec]
New Members
 gunnez97 2d:20h
 CcGaviria 3w
 wuyingddg 3w
 curiosity_def 3w:1d
 skywalkert 3w:2d
Fresh Problems

Broken DNA 46s
solved by 0 
Best Matrices Multiplication 2 2d:21h
solved by 7 
Central binomial coefficients 3d:21h
solved by 10 
Harmonic variations 6d:12h
solved by 7 
Special squarefree sum 1w:3d
solved by 5