# Known 21-digit prime factors of Googolplex - 1

1. Alpertron
2. Number Theory
3. Known 21-digit prime factors of Googolplex − 1
1. 1 0225985903 8981324801 (Dario Alpern, k=3633)
2. 1 1796480000 0000000001 (Phil Carmody, k=9)
3. 1 2364113510 4000000001 (Dario Alpern, k=943307)
4. 1 5000000000 0000000001 (Phil Carmody, k=3)
5. 1 5273437500 0000000001 (Phil Carmody, k=391)
6. 1 5735626220 7031250001 (Phil Carmody, k=33)
7. 1 5955433593 7500000001 (Dario Alpern, k=4084591)
8. 1 6648193359 3750000001 (Dario Alpern, k=68191)
9. 1 9200000000 0000000001 (Phil Carmody, k=3)
10. 1 9660800000 0000000001 (Phil Carmody, k=3)
11. 2 1045339750 4000000001 (Phil Carmody, k=49)
12. 2 5592664064 0000000001 (Dario Alpern, k=6248209)
13. 2 5600000000 0000000001 (Phil Carmody, k=1)
14. 2 5963200000 0000000001 (Dario Alpern, k=16227)
15. 2 6017600000 0000000001 (Dario Alpern, k=16261)
16. 2 6843545600 0000000001 (Phil Carmody, k=1)
17. 2 7343750000 0000000001 (Phil Carmody, k=7)
18. 3 6934265136 7187500001 (Dario Alpern, k=605131)
19. 3 6944335937 5000000001 (Dario Alpern, k=37831)
20. 3 9843832791 0400000001 (Dario Alpern, k=949951)
21. 4 0960000000 0000000001 (Phil Carmody, k=1)
22. 4 1938134765 6250000001 (Dario Alpern, k=858893)
23. 4 6116860184 2738790401 (Phil Carmody, k=1)
24. 5 9323200000 0000000001 (Dario Alpern, k=37077)
25. 5 9604644775 3906250001 (Phil Carmody, k=1)
26. 6 6498463247 8924800001 (Phil Carmody, k=189)
27. 6 6757202148 4375000001 (Phil Carmody, k=7)
28. 6 9175290276 4108185601 (Phil Carmody, k=3)
29. 7 3814613619 1139840001 (Dario Alpern, k=33567)
30. 7 6800000000 0000000001 (Phil Carmody, k=3)
31. 8 4170342400 0000000001 (Dario Alpern, k=102747)

Perl script written by Dario Alejandro Alpern. Last updated on May 25th, 2015.