λ
Sequence Observatory

6,903,905

5 × 1380781
Deficient Odd Composite

Starting at 6,903,905, the Collatz iteration reaches 1 after 191 steps. The first transition is 20711716; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 5 × 1380781
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 8,284,692
Proper Divisor Sum 1,380,787
Digit Sum / Digital Root 32 (Root: 5)
Adjacent Primes #6903901 ← → #6903913

Radix Representation

Decimal 6903905
Binary 11010010101100001100001 (23 bits)
Octal 0o32254141
Hexadecimal 0x695861

Divisor Catalog (4)

1 5 1,380,781 6,903,905

Collatz Trajectory (191 steps to reach 1)

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

6,903,905 20,711,716 10,355,858 5,177,929 15,533,788 7,766,894 3,883,447 11,650,342 5,825,171 17,475,514 8,737,757 26,213,272 13,106,636 6,553,318 3,276,659 9,829,978 4,914,989 14,744,968 7,372,484 3,686,242 1,843,121 5,529,364 2,764,682 1,382,341 4,147,024 2,073,512 1,036,756 518,378 259,189 777,568 388,784 194,392 97,196 48,598 24,299 72,898 36,449 109,348 54,674 27,337 82,012 41,006 20,503 61,510 30,755 92,266 46,133 138,400 69,200 34,600 17,300 8,650 4,325 12,976 6,488 3,244 1,622 811 2,434 1,217

More profiles

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