New version is ready - give it a try
Search Sequences Sequence overview Report factors Worker status Login



Usage
Example
Factorial 31!-1 31!-1
Primorials 31#-1 31#-1
Mersenne number 501 2^501-1 or M501
Fermat number 10 F10
Compositorial 50 50!/50#
Product of first 40 primes 40##
Lucas number 40 lucas(40)
Fibonacci number 40 I(40)
List mersenne numbers Mx
List 10^100+1 to 10^100+x 10^100+x
Accepted as variables b, d, k, n, x, y, z
The search is limited to ~200.000 Digits
Factor tables
+ Near-repdigit
+ Quasi-repdigit
+ Near-repdigit palindrome
+ Near Cunningham number
+ Plateau
+ Depression
+ Primorial
+ Compositorial
+ Others

Imprint