λ
Sequence Observatory

9,900,641

9900641
Deficient Odd Prime

Starting at 9,900,641, the Collatz iteration reaches 1 after 238 steps. The first transition is 29701924; the starting value is odd with 2 positive divisors.

Prime Factor Structure

Factorization String 9900641
Distinct Prime Factors 1
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 2
Divisor Sum (σ) 9,900,642
Proper Divisor Sum 1
Digit Sum / Digital Root 29 (Root: 2)
Adjacent Primes #9900623 ← → #9900643

Radix Representation

Decimal 9900641
Binary 100101110001001001100001 (24 bits)
Octal 0o45611141
Hexadecimal 0x971261

Divisor Catalog (2)

Collatz Trajectory (238 steps to reach 1)

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

9,900,641 29,701,924 14,850,962 7,425,481 22,276,444 11,138,222 5,569,111 16,707,334 8,353,667 25,061,002 12,530,501 37,591,504 18,795,752 9,397,876 4,698,938 2,349,469 7,048,408 3,524,204 1,762,102 881,051 2,643,154 1,321,577 3,964,732 1,982,366 991,183 2,973,550 1,486,775 4,460,326 2,230,163 6,690,490 3,345,245 10,035,736 5,017,868 2,508,934 1,254,467 3,763,402 1,881,701 5,645,104 2,822,552 1,411,276 705,638 352,819 1,058,458 529,229 1,587,688 793,844 396,922 198,461 595,384 297,692 148,846 74,423 223,270 111,635 334,906 167,453 502,360 251,180 125,590 62,795

More profiles

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