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The Largest Known Primes
| Position | Prime | Digits | Year of Discovery | |
| 1 | 232582657-1 | 9808358 | Sep. 4, 2006 | Mersenne 44? |
| 2 | 230402457-1 | 9152052 | 2005 | Mersenne 43? |
| 3 | 225964951-1 | 7816230 | 2005 | Mersenne 42? |
| 4 | 224036583-1 | 7235733 | 2004 | Mersenne 41? |
| 5 | 220996011-1 | 6320430 | 2003 | Mersenne 40? |
| 6 | 213466917-1 | 4053946 | 2001 | Mersenne 39 |
| 7 | 19249·2213018586+1 | 3918990 | 2007 | |
| 8 | 27653·22759677+1 | 2759677 | 2005 | |
| 9 | 28433·27830457+1 | 2357207 | 2004 | |
| 10 | 33661·227031232+1 | 2116617 | 2007 | |
| 11 | 26972593-1 | 2098960 | 1999 | Mersenne 38 |
| 12 | 5359.25054502+1 | 1521561 | 2003 | |
| 13 | 23021377-1 | 909526 | 1998 | Mersenne 37 |
| 14 | 22976221-1 | 895932 | 1997 | Mersenne 36 |
| 15 | 1372930131072+1 | 804474 | 2003 | Generalized Fermat |