Compare 42 vs 47

Typecomposite numberprime
Unique factors31
Total factors31
Prime factorization21 × 31 × 71471
Prime factorization2 × 3 × 747
Divisors count82
Divisors1, 2, 3, 6, 7, 14, 21, 421, 47
Number of properties021
Additive primes 10th
Carol primes 2nd
Chen primes 14th
Class 1+ primes 9th
Cousin primes (2nd member) 6th
Isolated primes 4th
Left-truncatable primes 10th
Long primes 6th
Lucas primes 6th
Pierpont primes of the 2nd kind 9th
Primes 15th
Prime triplets (3rd member) 7th
Safe primes 5th
Sexy primes (1st member) 10th
Sexy primes (2nd member) 9th
Sexy prime quadrupletss (2nd member) 3rd
Sexy prime triplets (1st member) 7th
Sexy prime triplets (2nd member) 6th
Solinas primes 13th
Thabit primes 5th
Ulam primes 5th
Roman numberalsXLIIXLVII
Base 210101021011112
Base 31120312023
Base 422242334
Base 513251425
Base 611061156
Base 7607657
Base 8528578
Base 9469529
Base 1042104710
Base 1139114311
Base 1236123b12
Base 1333133813
Base 1430143514
Base 152c153215
Base 162a162f16
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