λ
Sequence Observatory

6,393,659

29 × 220471
Deficient Odd Composite

Starting at 6,393,659, the Collatz iteration reaches 1 after 147 steps. The first transition is 19180978; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 29 × 220471
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 6,614,160
Proper Divisor Sum 220,501
Digit Sum / Digital Root 41 (Root: 5)
Adjacent Primes #6393641 ← → #6393661

Radix Representation

Decimal 6393659
Binary 11000011000111100111011 (23 bits)
Octal 0o30307473
Hexadecimal 0x618F3B

Divisor Catalog (4)

1 29 220,471 6,393,659

Collatz Trajectory (147 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

6,393,659 19,180,978 9,590,489 28,771,468 14,385,734 7,192,867 21,578,602 10,789,301 32,367,904 16,183,952 8,091,976 4,045,988 2,022,994 1,011,497 3,034,492 1,517,246 758,623 2,275,870 1,137,935 3,413,806 1,706,903 5,120,710 2,560,355 7,681,066 3,840,533 11,521,600 5,760,800 2,880,400 1,440,200 720,100 360,050 180,025 540,076 270,038 135,019 405,058 202,529 607,588 303,794 151,897 455,692 227,846 113,923 341,770 170,885 512,656 256,328 128,164 64,082 32,041 96,124 48,062 24,031 72,094 36,047 108,142 54,071 162,214 81,107 243,322

More profiles

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