81873...40415 (29-digits)

This number is a composite.

                                             818738425 7421346600 6829740415

Single Curio View:   (Seek other curios for this number)
G. L. Honaker, Jr. conjectures that 2^2*3^3*19^19*11251^11251*2980024297506569894680811251^2980024297506569894680811251+1 is prime. Note that 2^2+1, 2^2*3^3+1, 2^2*3^3*19^19+1, and 2^2*3^3*19^19*11251^11251+1, are all proven primes. (He offers a free Prime Curios! T-Shirt to the first person that can prove or disprove the primality of this 81873842574213466006829740415-digit number.)

Submitted: 2015-02-12 14:59:53;   Last Modified: 2022-03-14 15:57:35.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell