Monday, November 26, 2012

487

487 is a prime number.

487 is the smallest prime p such that p and p3 (115501303) have the same digit sum: 4 + 8 + 7 = 19 = 1 + 1 + 5 + 5 + 0 + 1 + 3 + 0 + 3.

487 is the number of Hadamard matrices of order 28.

487 is 200001 in base 3. It is 13213 in base 4 and 2131 in base 6. It is 747 in base 8 and 191 in base 18.

487 is the sum of three consecutive primes: 487 = 157 + 163 + 167.



Source: Number Gossip

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