λ
Sequence Observatory

1,317,917

1317917
Deficient Odd Prime

Starting at 1,317,917, the Collatz iteration reaches 1 after 93 steps. The first transition is 3953752; the starting value is odd with 2 positive divisors.

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Prime Factor Structure

Factorization String 1317917
Distinct Prime Factors 1
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 2
Divisor Sum (σ) 1,317,918
Proper Divisor Sum 1
Digit Sum / Digital Root 29 (Root: 2)
Adjacent Primes #1317887 ← → #1317929

Radix Representation

Decimal 1317917
Binary 101000001110000011101 (21 bits)
Octal 0o5016035
Hexadecimal 0x141C1D

Divisor Catalog (2)

Collatz Trajectory (93 steps to reach 1)

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

Showing the first 5 trajectory entries; the stopping-time total above is unchanged.

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