2475989
This number is a prime.
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Pomerance and Spicer conjecture that 2475989 is the largest prime number with the "product property", i.e., the product of its digits equals the number of primes less than or equal to 2475989. Found by Farideh Firoozbakht in 2004.
Submitted: 2004-08-06 03:28:07; Last Modified: 2023-10-13 13:23:11.
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